1 changes in sbcl-0.8.21 (0.9alpha.1?) relative to sbcl-0.8.20:
2 * incompatible change: thread support for non-NPTL systems has
3 been removed - locking is buggy and unreliable. A threaded
4 SBCL build will now refuse to start unless futex support is
6 * incompatible change: the top level REPL now has only an ABORT
7 restart associated with it, not TOPLEVEL and ABORT as it used to.
8 TOP and TOPLEVEL are now available as debugger commands for
9 returning to the top level.
10 * incompatible change: forms evaluated in the REPL now use the
11 global optimization policy.
12 * incompatible change: user- and system-initialization files are
13 no longer processed with LOAD, but by READ and EVAL; hence the
14 global optimization policy, startup package, readtable, etc,
16 * internal entry point details and argument counts no longer appear
17 in backtraces unless explicitly requested by setting
18 SB-DEBUG:*SHOW-ENTRY-POINT-DETAILS*.
19 * built-in and standard functions no longer have names like "top
20 level local call to FOO".
21 * fixed bug 32: functions defined in non-null lexical environments
22 now have more legible printed representation
23 * fixed bug 33: functions defined in non-null lexical environemnts
24 are now more amenable to inspection by INSPECT.
25 * workaround for bug 354: XEPs no longer appear in backtraces unless
27 * fixed bug: receiving the signal which results from attempting to
28 write to mprotect()ed memory (SIGSEGV on Linux and some *BSDs,
29 SIGBUS on other *BSDs) on architectures where the C stack is also
30 the Lisp stack (x86 and x86-64) from foreign code no longer leads
31 to debugger confusion or wild instability. (reported by Cheuksan
33 * fixed bug: COUNT and EQUAL no longer issue compiler efficiency
34 notes when operating on objects known to be SIMPLE-BIT-VECTORs.
35 (reported by Lutz Euler)
36 * fixed bug: (TYPEP X '(MEMBER ...)) no longer returns a list in
37 compiled code. (reported by Paul Dietz)
38 * fixed bug 276b: mutating with MULTIPLE-VALUE-SETQ a binding of a
39 specialized parameter to a method to something that is not TYPEP
40 the specializer is now possible.
41 * fixed bug: the MAKE-INSTANCE optimization is now correct in the
42 face of package deletion.
43 * fixed bug: LOAD should bind *LOAD-PATHNAME* to the merged
44 pathname. (reported by David Tolpin on c.l.l)
45 * contrib improvement: the SB-SIMPLE-STREAMS contrib now defines
46 STRING-SIMPLE-STREAM and FILE-SIMPLE-STREAM as subclasses of
47 STRING-STREAM and FILE-STREAM, respectively.
48 * contrib improvement: SB-INTROSPECT handles more of SLIME's needs
49 than previously; in addition, its test suite is now run on build.
50 (thanks to Luke Gorrie)
51 * a more robust x86-64 disassembler. (thanks to Lutz Euler)
52 * optimization: added a immediate representation for single-floats
54 * fixed some bugs revealed by Paul Dietz' test suite:
55 ** MISC.564: defined out-of-line version of %ATAN2 on x86.
56 ** attempting to create a package with a colliding nickname causes
57 correctable errors to be signalled.
58 ** MISC.572-574: :START1 and :START2 broken for simple-base-strings.
59 ** several x86-64 backend bugs related to sign-extension of immediate
62 changes in sbcl-0.8.20 (0.9alpha.0?) relative to sbcl-0.8.19:
63 * fixed inspection of specialized arrays. (thanks to Simon Alexander)
64 * fixed disassembly of SHLD and SHRD on x86. (thanks to David
66 * fixed loading of multiply forward-referenced layouts.
67 (thanks to Cheuksan Wang)
68 * fixed bug 7: less verbose COMPILE-FILE output. Additionally, the
69 output is now directed to *STANDARD-OUTPUT* as specified by ANSI.
70 (see COMPILE-FILE documentation for details of :PRINT option)
71 * fixed bugs 19 and 317: fixed-format floating point printing is
72 more accurate. This also fixes a bug reported by Adam Warner
73 related to the ~@F format directive.
74 * fixed bug 371: bignum print/read inconsistency. (thanks to Harald
76 * fixed bug: SET-SYNTAX-FROM-CHAR correctly shallow-copies a
77 dispatch table if the from-char is a dispatch macro character.
78 * fixed bug: COUNT and EQUAL on bit vectors with lengths divisible
79 by the wordsize no longer ignore the last word. (reported by Lutz
81 * fixed bug in type checking of dynamic-extent variables. (reported
83 * optimization: sequence traversal functions use their freedom to
84 coerce function designators to functions.
85 * optimization: code with many calls to CLOS methods specialized on
86 CLOS classes has had redundant type checks removed.
87 * optimization: added declarations to speed up operations that access
88 the internal character database (for example STRING-UPCASE)
89 * optimization: comparison operations between floats and sufficiently small
90 fixnums no longer create extra rationals
91 * fixed some bugs related to Unicode integration:
92 ** portions of multibyte characters at the end of buffers for
93 character-based file input are correctly transferred to the
94 start of the buffer at the next read.
95 ** COMPILE-FILE now respects any EXTERNAL-FORMAT argument given,
96 passing it through to OPEN.
97 ** LOAD on source files likewise passes any EXTERNAL-FORMAT
98 argument given to internal calls to OPEN.
99 ** the built-in comment readers (introduced by character sequences
100 ";" and "#|") are more forgiving to encoding errors; they will
101 STYLE-WARN and then attempt to resync the stream at a character
102 boundary. (thanks to Teemu Kalvas)
103 * fixed some bugs in the x86-64 port:
104 ** Negative short int return values from c-calls are sign-extended
106 ** The stack is aligned to 16-bytes for c-calls, as required by
107 the ABI. (thanks to Cheuksan Wang)
108 ** The disassembler understands more x86-64. (thanks to Cheuksan Wang)
109 ** The regression tests use SB-ALIEN:INT instead of SB-ALIEN:INTEGER
110 for enums. (thanks to Vincent Arkesteijn)
111 ** Multiple small optimizations and bugfixes for floating point
113 * fixed some bugs revealed by Paul Dietz' test suite:
114 ** Space, Tab, Linefeed, Return and Page have the invalid
115 secondary constituent character trait.
116 ** SET-SYNTAX-FROM-CHAR correctly copies multiple-escape character
118 ** WITH-INPUT-FROM-STRING should only update the index place on
120 ** Pretty-printing backquoted forms when *PRINT-CIRCLE* is true
122 ** Bit-array operations (BIT-AND and similar) worked incorrectly
123 with one-dimensional arrays with fill pointers.
124 ** TYPE-OF failed on a complex with an integer realpart and a
126 ** compiler failure during type inference for the code of form
127 (IF (EQL X (THE ...)) ...) (MISC.535).
129 changes in sbcl-0.8.19 relative to sbcl-0.8.18:
130 * new port: SBCL now works in native 64-bit mode on x86-64/Linux
131 platform. The port supports 61-bit fixnums, large memory spaces
132 and reloading shared object files.
133 * enhancement: saving cores with foreign code loaded is now
134 supported on ppc/Darwin in addition to the previously supported
136 * enhancement: the statistical profiler now walks deeper into the
137 call stack for more meaningful call-graphs and accrued time
138 reports (x86/x86-64 only). It also now reports time spent in
140 * enhancement: it is now possible to trace most individual methods
141 of a generic function in addition to tracing the generic function
143 * bug fix: invalid :DEFAULT-INITARGS are detected in compiled calls
145 * bug fix: defaulted initargs are passed to INITIALIZE-INSTANCE and
146 SHARED-INITIALIZE methods from compiled calls to MAKE-INSTANCE.
147 * bug fix: COERCE to (COMPLEX FLOAT) of a complex number no longer
148 produces an error. (thanks to Vincent Arkesteijn)
149 * bug fix: NAMESTRING on pathnames with :WILD components in their
150 directories works correctly. (thanks to Artem V. Andreev)
151 * fixed bug 125: compiler preserves identity of closures. (reported
153 * bug fixed: functions with &REST arguments sometimes failed with
154 "Undefined function" when compiled with (DEBUG 3). (reported by
156 * bug fix: overflow during compiling of setting element of a bit
157 vector with constant index and value. (reported by Timmy Douglas)
158 * build fix: fixed the dependence on *LOAD-PATHNAME* and
159 *COMPILE-FILE-PATHNAME* being absolute pathnames.
160 * on x86 compiler partially supports stack allocation of dynamic-extent
162 * GO and RETURN-FROM do not check the extent of their exit points
163 when compiled with SAFETY 0.
164 * fixed some bugs related to Unicode integration:
165 ** encoding and decoding errors are now much more robustly
166 handled; it should now be possible to recover even from invalid
167 input or output to the terminal. (thanks to Teemu Kalvas)
168 ** provided a first cut at implementing STRING-TO-OCTETS and
169 OCTETS-TO-STRING. (thanks to Robert J. Macomber)
170 ** altered the SB-MD5 contributed module slightly, changing the
171 interface just enough for it to be supportable for builds where
172 lisp characters are not eight bits.
173 * fixed some bugs revealed by Paul Dietz' test suite:
174 ** the FORMATTER-generated functions for ~V[ conditionals require
175 the correct number of arguments.
176 ** READ-FROM-STRING returns the mandated second value when applied
177 to displaced strings.
178 ** the #\Rubout and #\Backspace characters are treated as invalid
179 constituent characters by the tokenizer.
181 changes in sbcl-0.8.18 relative to sbcl-0.8.17:
182 * new feature: reloading changed shared object files with
183 LOAD-SHARED-OBJECT now causes the new definitions to take effect.
184 * new feature: references to foreign variables and functions
185 can now be compiled and loaded before the corresponding shared
186 object file is loaded, as long as the foreign definitions are
187 available at runtime.
188 * Solaris 10 (aka SunOS 5.10) on the SPARC platform is now
189 supported. (thanks to Dan Debertin)
190 * SB-ALIEN enums can now be represented in Lisp by any symbols, not
191 just keywords. (thanks to Vincent Arkesteijn)
192 * fixed bug #331: structure-class instances corresponding to
193 DEFSTRUCT forms are now created eagerly.
194 * fixed bug #345: backtraces from calls to undefined functions work
195 on x86 as well. Related bug #61 is now also partially fixed on x86
196 (backtraces from throws to unknown catch tags.)
197 * bug fix: lambda-list parsing is now stricter vrt. order and number
198 of lambda-list keywords.
199 * bug fix: as specified by AMOP, an error is signalled if a
200 class-option appears multiple times in a DEFCLASS form. (reported
202 * bug fix: RANDOM can be compiled when the compiler derives the type
203 of its numeric argument as a disjoint set of small integers.
204 (reported by Paul Dietz)
205 * bug fix: starting a core saved with shared objects loaded when
206 those objects are not available no longer causes threaded SBCL to
207 hang. (reported by Sean Ross)
208 * bug fix: evaluated FUNCTION no longer bypasses encapsulation (eg.
210 * bug fix: (SETF MACRO-FUNCTION) now accepts an optional environment
211 argument, which must always be NIL. (reported by Kalle Niemitalo)
212 * bug fix: printing 1.0d+23 no longer results in an error.
213 (reported by Rolf Wester for CMUCL; bug fix from Raymond Toy)
214 * bug fix: structure slot setters preserve evaluation order. (thanks
216 * fixed some bugs related to Unicode integration:
217 ** RUN-PROGRAM can allow its child to take input from a Lisp
218 stream. (reported by Stefan Scholl)
219 ** ASDF-INSTALL successfully downloads .tar.gz files in all
220 locales. (reported by Ken Causey)
221 * fixed some bugs revealed by Paul Dietz' test suite:
222 ** INCF, DECF and REMF evaluate their place form as specified in
224 ** FORMATTER expands ~{ ~} iteration directives with V or #
225 parameters correctly.
226 ** FORMATTER deals with the ~@[ ~] conditional directive where the
227 consequent uses no arguments correctly.
228 ** the system has a partial understanding of the (COMPLEX RATIO)
230 ** UPGRADED-COMPLEX-PART-TYPE obeys the lattice upgrading rules
233 changes in sbcl-0.8.17 relative to sbcl-0.8.16:
234 * new feature: a build-time option (controlled by the :SB-UNICODE
235 keyword feature, enabled by default) for building the system with
236 support for the entire 21-bit character space defined by the
238 * new feature: the system now has rudimentary external-format
239 support; the primary user-visible change at this time is that
240 characters with the high bit set (such as lower-case-e-acute) will
241 print correctly to a terminal in a UTF-8 environment.
242 * minor incompatible change: BASE-CHAR no longer names a class;
243 however, CHARACTER continues to do so, as required by ANSI.
244 * minor incompatible change: SB-DEBUG:*DEBUG-PRINT-FOO* variables
245 are no longer supported, and SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST*
246 has been moved to the SB-EXT package (temporarily re-exported from
248 * minor incompatible change: SB-C::*COMPILER-ERROR-PRINT-FOO* variables
249 are no longer supported: use SB-EXT:*COMPILER-PRINT-VARIABLE-ALIST*
251 * fixed bug #351: better error-handlind and reporting for malformed
253 * fixed bug #350: bignum-printing is now more memory-efficient,
254 allowing printing of very large bignums, eg. (expt 2 10000000).
255 (reported by Bruno Haible)
256 * fixed bug #302: better primitive-type selection for intersection
258 * fixed bug #308: non-graphic characters now all have names, as
259 required. (reported by Bruno Haible)
260 * bug fix: redefining a class with different superclasses now correctly
261 removes it from the direct-subclasses of its previous superclasses.
262 (reported by David Morse)
263 * bug fix: (SETF FIND-CLASS) using a FORWARD-REFERENCED-CLASS as the
264 new value now works. (reported by Bruno Haible)
265 * bug fix: correct canonicalization of multiple non-standard slot
266 options in DEFCLASS as per AMOP 5.4.2. (reported by Bruno Haible)
267 * bug fix: SB-MOP:CLASS-PROTOTYPE now signals an error if the class
268 is not yet finalized, as required by AMOP. (reported by Bruno Haible)
269 * bug fix: SB-MOP:ALLOCATE-INSTANCE method for instances of BUILT-IN-CLASS
270 now exists, an signals an error.
271 * bug fix: duplicate LOOP variable bindings now signal PROGRAM-ERROR
272 during macroexpansion for non-iteration variables as well. (reported
273 by Bruno Haible for CMUCL)
274 * bug fix: Cyclic structures and unprintable objects in compiler
275 messages no longer cause errors. (reported by Bruno Haible)
276 * bug fix: READ, READ-PRESERVING-WHITESPACE, READ-DELIMITED-LIST,
277 and READ-FROM-STRING all now return a primary value of NIL if
278 *READ-SUPPRESS* is true. (reported by Bruno Haible for CMUCL)
279 * bug fix: Default value of EOF-ERROR-P in READ-FROM-STRING is true.
280 (reported by Bruno Haible for CMUCL)
281 * bug fix: ERROR now signals a TYPE-ERROR if the arguments to ERROR
282 do not designate a condition. (reported by Bruno Haible for
284 * bug fix: UNINTERN, USE-PACKAGE, IMPORT and EXPORT all signal an
285 SB-EXT:NAME-CONFLICT condition (subtype of PACKAGE-ERROR) in the
286 name conflict situations in CLHS 11.1.1.2.5, and provide a restart
287 permitting resolution in favour of any of the conflicting symbols.
288 (reported by Bruno Haible for CMUCL)
289 * bug fix: EQUAL compiler optimizations is less aggressive on
290 strings which can potentially compare true despite having distinct
291 specialized array element types.
292 * bug fix: unit enumerations can be defined without dividing by
293 zero. (thanks to Vincent Arkesteijn)
294 * FORMAT compile-time argument count checking has been enhanced.
295 (report from Bruno Haible for CMUCL)
296 * a partial workaround for the bug 262: the compiler does not try to
297 inline-expand a local function doing RETURN-FROM from a deleted
298 BLOCK. (thanks to Peter Denno for the bug report and to David
299 Wragg for the simple test case)
300 * fixed some bugs revealed by Paul Dietz' test suite:
301 ** RENAME-PACKAGE allows all package designators as new package
303 ** constraint propagation and lambda variable substitution are
304 more cautious in dealing with partially deleted code.
305 ** compiler sometimes lost reoptimization passes.
306 ** CERROR, given a condition as condition designator, passes its
307 remaining arguments to the continue format control without
309 ** Case-altering FORMAT directives work correctly on non-ASCII
311 ** The REAL type specifier handles bounds outside the floating
312 point ranges without signalling FLOATING-POINT-OVERFLOW.
313 ** Functions with IR1-transformations can create intercomponent
314 references to global functions.
315 ** NIL parameter to the FORMAT directive ~^ means `unsupplied
317 ** FORMAT ~R treats a nil value for its first parameter correctly.
319 changes in sbcl-0.8.16 relative to sbcl-0.8.15:
320 * enhancement: saving cores with foreign code loaded is now
321 supported on x86/NetBSD and sparc/Linux in addition to the previously
323 * bug fix: on some platforms repeated installations caused multiple
324 copies of HTML documentation to be installed -- should not happen
325 any more. (reported by Stefan Scholl)
326 * bug fix: parsing self-recursive alien record types multiple times
327 no longer causes infinite recursion. (reported by Thomas F. Burdick,
328 original patch by Helmut Eller for CMUCL)
329 * bug fix: stack-exhaustion detection works now on NetBSD as well.
330 (thanks to Richard Kreuter)
331 * bug fix: defining classes whose accessors are methods on existing
332 generic functions in other (locked) packages no longer signals
333 bogus package lock violations. (reported by François-René Rideau)
334 * bug fix: special variables as DEFMETHOD parameters no longer have
335 associated bogus type declarations. (reported by David Wragg and
337 * bug fix: read-write consistency on streams of element-type
338 (SIGNED-BYTE N) for N > 32. (reported by Bruno Haible for CMUCL)
339 * bug fix: redefiniton of the only method of a generic function with
340 no DEFGENERIC no longer emits a full WARNING. In addition,
341 redefinition of generic functions with no DEFGENERIC to an
342 incompatible lambda list now signals an error. (thanks to Zach
344 * bug fix: DEFGENERIC now works even when there's a function of the
345 same name in an enclosing lexical environment. (thanks to Zach
347 * fixed compiler failure, caused by instrumenting code during
348 IR1-optimization. (Debian bug report #273606 by Gabor Melis)
349 * optimization: added loop analysis and improved register allocation
350 * fixed some bugs revealed by Paul Dietz' test suite:
351 ** POSITION on displaced vectors with non-zero displacement
352 returns the right answer.
353 ** (SIMPLE-STRING) is a valid type specifier for sequence
355 ** *PRINT-LEVEL* handling for slotless structures is pedantically
357 ** PPRINT-INDENT accepts a request for an indentation of any REAL.
358 ** PPRINT-TAB (and the FORMAT ~T directive) now indent by the
360 ** The justification version of the FORMAT ~< directive treats
361 non-zero minpad parameter correctly.
363 changes in sbcl-0.8.15 relative to sbcl-0.8.14:
364 * incompatible change: SB-INT:*BEFORE-SAVE-INITIALIZATIONS* and
365 SB-INT:*AFTER-SAVE-INITIALIZATIONS* have been renamed
366 SB-EXT:*SAVE-HOOKS* and SB-EXT:*INIT-HOOKS*, and are now part of
367 the supported interface.
368 * new feature: Single-stepping of code compiled with DEBUG 2 or
369 higher and (> DEBUG (MAX SPACE SPEED)) is now possible.
370 * new feature: saving cores with foreign code loaded is now
371 supported on x86/FreeBSD, x86/Linux, and sparc/SunOS. (based on
372 Timothy Moore's work for CMUCL)
373 * bug fix: DEFTYPE lambda-list parsing now binds unsupplied keyword
374 parameters to * instead of NIL if no initform is supplied.
375 (reported by Johan Bockgaard)
376 * bug fix: DEFINE-COMPILER-MACRO lambda-list parsing now binds
377 correctly when FUNCALL appears as the car of the form. Note:
378 despite this FUNCALL forms are not currently subject to
379 compiler-macro expansion. (port of Raymond Toy's fix for the
380 same from CMUCL, reported by Johan Bockgaard)
381 * bug fix: FOR ... ON ... -clauses in LOOP now work on dotted lists
382 (thanks for Teemu Kalvas)
383 * bug fix: in FORMAT ~^ inside ~:{ now correctly steps to the next
384 case instead of terminating the iteration (thanks for Julian
385 Squires, Sean Champ and Raymond Toy)
386 * bug fix: incorrect expansion of defgeneric that caused a style
387 warning. (thanks for Zach Beane)
388 * bug fix: slot accessor effective method computation works properly
389 for classes with multiple non-standard applicable methods on
390 SB-MOP:SLOT-VALUE-USING-CLASS. (reported by Ralf Mattes)
391 * on x86 compiler supports stack allocation of results of LIST and
392 LIST*, bound to variables, declared DYNAMIC-EXTENT. (based on
393 CMUCL implementation by Gerd Moellmann)
394 * fixed some bugs revealed by Paul Dietz' test suite:
395 ** FORMAT strings with both the ~<~:;~> form of the justification
396 directive and pretty-printing directives cause an error.
398 changes in sbcl-0.8.14 relative to sbcl-0.8.13:
399 * incompatible change: the internal functions
400 SB-KERNEL:32BIT-LOGICAL-FOO, intended for providing efficient
401 logical operations on (UNSIGNED-BYTE 32) values, have been renamed
402 to SB-KERNEL:WORD-LOGICAL-FOO. Modular arithmetic should be used
403 instead of the old functions.
404 * new feature: on platforms where "dladdr" is available foreign
405 function names now appear in backtraces. (based on Helmut Eller's
407 * documentation: documentation for SB-BSD-SOCKETS, SB-GRAY,
408 SB-SIMPLE-STREAMS, and SB-PROFILE have been integrated into the user
410 * documentation: ASDF manual is now distributed with SBCL.
411 * bug fix: SBCL can now load its contributed modules with REQUIRE
412 even if the system-provided entries have been removed from
413 ASDF:*CENTRAL-REGISTRY*. Infinite recursion in REQUIRE is also
415 * bug fix: backtraces involving undefined functions or assembly
416 routines are more informative. (thanks to Brian Downing)
417 * bug fix: mutually referent alien structures now work correctly.
418 (reported by Rick Taube)
419 * bug fix: structures defined by WITH-ALIEN can be referred to
420 within other definitions in the same WITH-ALIEN.
421 * bug fix: division operators (MOD, TRUNCATE and the like) with
422 constant zero divisors and integer dividends no longer generate
424 * bug fix: provide default methods for INPUT-STREAM-P and
425 OUTPUT-STREAM-P specialized on SB-GRAY:FUNDAMENTAL-STREAM.
426 * bug fix: improve the detection and resolution of MOP metacycles
427 (where effective method computation depends on the generic function
428 having its effective method computed). (reported by Bruno Haible)
429 * bug fix: pass the right initargs to :BEFORE or :AFTER methods on
430 SHARED-INITIALIZE or INITIALIZE-INSTANCE in optimized
431 MAKE-INSTANCE constructors. (reported by Axel Schairer for cmucl)
432 * bug fix: pathnames with relative directory components can be
433 represented relative to default pathnames.
434 * optimization: in taking the GCD of bignums, reduce the two bignums
435 to approximately the same size (using Euclid's algorithm) before
436 applying the more sophisticated binary GCD. (thanks to Juho
438 * optimization: COUNT on bitvectors now operates word-at-a-time.
439 * optimization: ASH with a positive, but not necessarily constant,
440 (leftwards) shift, when in a modular context, is compiled to a
442 * fixed some bugs revealed by Paul Dietz' test suite:
443 ** FORMAT variable parameters ("~V<char>") are defaulted properly
444 if the corresponding argument is NIL.
445 ** FORMAT directives accepting a minpad parameter treat negative
447 ** literal commas as character parameters to FORMAT directives are
449 ** literal spaces directly after ~<Newline> directives within a
450 format-logical-block (~:< ~@:>) do not induce :FILL-style
451 conditional newlines.
452 ** PRINT-UNREADABLE-OBJECT inserts spaces as specified (and only
453 as specified: it no longer includes conditional newlines).
454 ** PRINC-TO-STRING binds *PRINT-READABLY* to NIL (as well as
456 ** PPRINT-LOGICAL-BLOCK signals a TYPE-ERROR if its :PREFIX or
457 :PER-LINE-PREFIX argument does not evaluate to a string.
459 changes in sbcl-0.8.13 relative to sbcl-0.8.12:
460 * new feature: SB-PACKAGE-LOCKS. See the "Package Locks" section of
461 the manual for details; for now, package locks can be disabled by
462 removing :SB-PACKAGE-LOCKS in customize-target-features.lisp, but
463 if no major problems are found then it is likely that they will be
464 compiled in unconditionally.
465 * major incompatible change: LOAD-FOREIGN and LOAD-1-FOREIGN are now
466 unsupported operators on all platforms. To load a shared library
467 into SBCL, use SB-ALIEN:LOAD-SHARED-OBJECT. To load a non-shared
468 object file, link it into a shared library outside of SBCL and
469 load it using SB-ALIEN:LOAD-SHARED-OBJECT. (incidentally fixes
471 * bug workaround: ROOM T and the GC were not working together
472 reliably, because invariants expected by the SB!VM:INSTANCE-USAGE
473 reporting facility aren't preserved. That reporting has been
474 disabled, so now until and unless someone figures out how to make it
475 work reliably with the current GC, (ROOM T) is equivalent to (ROOM).
476 * minor incompatible change: as threatened around sbcl-0.8.0, the
477 home package of MOP-related symbols is now SB-MOP, not SB-PCL.
478 The symbols are also exported from SB-PCL for backwards
479 compatibility, but more so than before SB-PCL should be treated as
480 an implementation-internal package.
481 * fasl format changed: SBCL 0.8.13 fasls are incompatible with those
483 * the SB-SPROF contrib now works on (most) non-x86 architectures.
484 It is known as of this release not to work on the Alpha, however.
485 * fixed bug #167: errors signalled due to illegal syntax in method
486 bodies are now more legible.
487 * fixed bug #338: instances of EQL-SPECIFIER are now valid type
488 designators and can hence be used with TYPEP.
489 * fixed bug #333: CHECK-TYPE now ensures that the type error
490 signalled, if any, has the right object to be accessed by
491 TYPE-ERROR-DATUM. (reported by Tony Martinez)
492 * fixed bug #340: SETF of VALUES obeys the specification in ANSI
493 5.1.2.3 for multiple-value place subforms. (reported by Kalle
495 * fixed bug #334: programmatic addition of slots using specialized
496 methods on SB-MOP:COMPUTE-SLOTS works for :ALLOCATION :INSTANCE
497 and :ALLOCATION :CLASS slots.
498 * fixed bug #269: SCALE-FLOAT scales floats by any integer, not just
499 float exponents. (rereported by Peter Seibel)
500 * fixed a bug: #\Space (and other whitespace characters) are no
501 longer considered to be macro characters in standard syntax by
503 * fixed bug: initialization of condition class metaobjects no longer
504 causes an instance of the condition to be created. (reported by
506 * fixed bug: it is now possible to have slots such that
507 SB-MOP:SLOT-DEFINITION-ALLOCATION of the effective slot
508 description is neither :INSTANCE nor :CLASS.
509 * fixed bug: the ctor optimization of MAKE-INSTANCE now respects
510 user-defined methods on SLOT-BOUNDP-USING-CLASS and (SETF
511 SLOT-VALUE-USING-CLASS), and no longer causes errors with
512 non-standard SLOT-DEFINITION-ALLOCATION values.
513 * fixed bugs: various race conditions handling exiting threads.
514 CL-PPCRE's thread torture test now passes.
515 * fixed arguably-a-bug: GC time proportional to number of threads in
516 system even when most of them are idle
517 * optimization: improved performance of BIT and SBIT on bit-vectors.
518 * .fasl file incompatibility: The fasl file version number has
519 been incremented because of changes associated with package locks.
521 changes in sbcl-0.8.12 relative to sbcl-0.8.11:
522 * minor incompatible change: the system no longer provides
523 optimization hints (conditions which are TYPEP
524 SB-EXT:COMPILER-NOTE) for conforming code in default compilation
525 mode; these hints are still emitted when higher SPEED optimization
527 * new contrib module: a sampling profiler (profiling by statistical
528 sampling, rather than by instrumenting functions) is available as
529 the SB-SPROF contrib. (thanks to Gerd Moellmann and Juho Snellman)
530 * the behaviour of the standard function ED is now customizeable by
531 third parties through a hook variable: see ED's documentation
532 string for information on the protocol.
533 * the compiler no longer emits efficiency notes for (FUNCALL X)
534 when the type of X is uncertain under default optimization
536 * fixed bug 276: mutating a binding of a specialized parameter to a
537 method to something that is not TYPEP the specializer is now
539 * fixed bugs 45d and 118: DOUBLE-FLOAT[-NEGATIVE]-EPSILON now
540 exhibit the required behaviour on the x86 platform. (thanks to
541 Peter van Eynde, Eric Marsden and Bruno Haible)
542 * fixed bug 335: ATANH now computes the inverse hyperbolic tangent
543 even for difficult arguments. (reported by Peter Graves)
544 * fixed bug 141a: the backquote printer now descends quoted
546 * fixed another bug in backquote printing: no more destructive
547 modification of the form's list structure. (reported by Brian
549 * fixed bug in INTERRUPT-THREAD: pin the function, so that it cannot
550 move between its address being taken and the call to
551 interrupt_thread, fixing a crashing race condition.
552 * the SB-POSIX contrib implementation has been adjusted so that it
553 no longer exhibits ridiculously poor performance when constructing
554 instances corresponding to C structs.
556 changes in sbcl-0.8.11 relative to sbcl-0.8.10:
557 * minor incompatible change: the sb-grovel contrib now treats C
558 structures as alien (in the sense of SB-ALIEN) objects rather than
559 as undistinguished (simple-array (unsigned-byte 8) (*))s. This
560 has implications for memory management of client code
561 (sb-grovel-returned objects must now be manually managed) and for
562 type safety (alien objects now have full types).
563 * new feature: the SB-EXT:MUFFLE-CONDITIONS declaration should be
564 used to control emission of compiler diagnostics, rather than the
565 SB-EXT:INHIBIT-WARNINGS OPTIMIZE quality. See the manual for
566 documentation on this feature. The SB-EXT:INHIBIT-WARNINGS
567 quality should be considered deprecated.
568 * install.sh now installs the user manual as well
569 * (not quite a new documentable feature, but worth considering in
570 the light of the new SB-EXT:MUFFLE-CONDITIONS declaration): the
571 beginnings of a semantically meaningful condition hierarchy is
572 under development, for use in SB-EXT:MUFFLE-CONDITIONS and by
574 * fixed bug: PARSE-NAMESTRING now accepts any valid pathaname
575 designator as the defaults argument.
576 * fixed bug: Displaced arrays whose displaced-to array has become
577 too small now cause ARRAY-DIMENSION to signal an error, providing
578 for safer bounds-checking. (reported by Bruno Haible)
579 * fixed bug: DEFCLASS slot definitions with identical :READER and
580 :WRITER names now signal a reasonable error. (reported by Thomas
582 * fixed bug: CLOSE :ABORT T on appending stream no longer causes
584 * fixed bug: Invalid slot specification errors now print correctly.
585 (thanks to Zach Beane)
586 * fixed bug 320: Shared to local slot value transfers in class
587 redefinitions now happen corrently from superclasses as
588 well. (reported by Bruno Haible)
589 * fixed bug 316: SHIFTF now accepts VALUES forms. (reported by Bruno
591 * fixed bug 322: DEFSTRUCT :TYPE LIST type predicates now handle
592 improper lists correctly. (reported by Bruno Haible)
593 * fixed bug 313: source-transform for <fun-name> was erroneously
594 applied to a call of a value of a variable with name <fun-name>.
595 (reported by Antonio Menezes Leitao)
596 * fixed bug 307: The obsolete instance protocol ensures that
597 subclasses are properly obsoleted. (thanks to Nikodemus Siivola)
598 * fixed bug 298, revealed by Paul F. Dietz' test suite: SBCL can
599 remove dead unknown-values globs from the middle of the stack.
600 * added a new restart to *BREAK-ON-SIGNALS* handling to make it
601 easier to resume long computations after using *BREAK-ON-SIGNALS*
602 to diagnose and fix failures. (thanks to Nikodemus Siivola)
603 * fixed bug reported by PFD in lisppaste #747 (and Bruno Haible from
604 CLISP test suite): WRITE-TO-STRING is not constant-foldable.
605 * fixed bugs in COMPLEX type specifier: UPGRADED-COMPLEX-PART-TYPE
606 is now consistent with (COMPLEX <x>); bugs in treatment of COMPLEX
607 MEMBER and UNION types have likewise been fixed. (thanks to Bruno
609 * fixed a (fairly theoretical) bug in string printing: if
610 *PRINT-READABLY* is true, signal PRINT-NOT-READABLE if the string
611 does not have array-element-type equal to the most general string
613 * fixed bug: SET-PPRINT-DISPATCH does not immediately resolve
614 function name. (thanks to Nikodemus Siivola)
615 * fixed bug: compile-time format string checker failed on
616 non-closed ~{. (reported by Thomas F Burdick)
617 * fixed bug: as reported by Kalle Olavi Niemitalo on #lisp IRC,
618 don't warn on legal loop code involving more than one aggregate
619 boolean. (thanks to Nikodemus Siivola)
620 * fixed bug: as reported by Peter Graves on #lisp IRC, passing a NIL
621 in keyword position to MAKE-PACKAGE was not being reported as
623 * fixed bug: as reported by Juan Ripoll on cmucl-imp,
624 MULTIPLE-VALUE-BIND should be able to lexically bind lambda list
626 * fixed bugs 280 and 312: the checking for multiple definitions in a
627 file is less likely to become confused by uses of inline
629 * fixed bug: the #S reader macro performs the keyword coercion
630 specified for slot names. (reported by Kalle Niemitalo)
631 * fixed bug: lambda lists may contain symbols whose names start with
632 & but are not lambda-list-keywords; their occurrence triggers a
634 * fixed bug 321: define-method-combination argument lambda lists do
635 not cause invalid code to be generated when &optional or &aux
636 variables have default values. (reported by Bruno Haible)
637 * fixed bug 327: system subclasses of STRUCTURE-OBJECT or CONDITION
638 have CLOS classes; this appears also to have fixed reported
639 instability in stack exhaustion detection.
640 * fixed bug: the CONTROL-ERROR from ABORT, CONTINUE and
641 MUFFLE-WARNING when no associated restart is present is now
643 * optimization: rearranged the expansion of various defining macros
644 so that each expands into only one top-level form in a
645 :LOAD-TOPLEVEL context; this appears to decrease fasl sizes by
647 * optimization: used a previously little-used slot in symbols to
648 cache SXHASH values, yielding a 5-10% compiler speedup. (thanks
650 * fixed some bugs revealed by Paul Dietz' test suite:
651 ** MAKE-INSTANCES-OBSOLETE returns the class name when called with
653 ** Fixed an optimization bug related to inheritance of initforms
654 from local to shared slots.
655 ** FILE-POSITION works as specified on BROADCAST-STREAMs.
656 ** CAST optimizer forgot to flush argument derived type.
657 ** print/read consistency on floats is now orders of magnitude
658 more likely. (thanks also to Bruno Haible for a similar report
660 ** removed stack cleaning in the cleanup part of UNWIND-PROTECT.
661 ** IMAGPART is specified (infelicitously) to return (* 0 <thing>)
662 for objects of type REAL. Make it so.
663 ** SXHASH is specified (infelicitously) to respect similarity,
664 which means that (SXHASH 0.0) must equal (SXHASH -0.0). Make
665 it so. (thanks to Markus Ziegler)
666 ** on the Alpha, the compiler succeeds in compiling functions
667 returning a known number of arguments greater than 63.
668 ** fixed handling of invalid NIL arguments in keyword position
670 ** fixed non-pretty printing of arrays with *PRINT-RADIX* being
672 ** provided a readably-printable representation for RANDOM-STATE
674 ** ensured that pathnames, where they have a namestring, always
675 print using #P"..." syntax.
677 changes in sbcl-0.8.10 relative to sbcl-0.8.9:
678 * Support for the forthcoming 2.0 version of the NetBSD kernel
679 running on x86 hardware has been added. (thanks to Perry
680 E. Metzger most immediately, and others for their past work)
681 * SBCL now runs on OpenBSD 3.4. (Thanks to Scott Parish; 3.4 is the
682 current release version; SBCL's OpenBSD support had been broken
683 since about the time of OpenBSD's switch to ELF binary format.)
684 * [placeholder for DX summary]
685 ** user code with &REST lists declared dynamic-extent, under high
686 speed or space and low safety and debug optimization policy.
687 * The manual has been converted to Texinfo format and the debugger
688 chapter from the cmucl manual has been added.
689 * A facility has been added to extract documentation strings from
690 sbcl and store them as Texinfo-formatted snippets for inclusion in
691 the manual (via Texinfo's @include directive)
692 * bug fix: compiler emitted division in optimized DEREF. (thanks for
693 the test case to Dave Roberts)
694 * bug fix: multidimensional simple arrays loaded from FASLs had fill
695 pointers. (reported by Sean Ross)
696 * bug fix: PROFILE output is printed nicely even for large numerical
697 values. (thanks to Zach Beane)
698 * bug fix: streams with element-type (SIGNED-BYTE <N>) for <N>
699 greater than 32 handle EOF correctly.
700 * bug fix: on X86 an immediate argument of the IMUL instruction is
701 correctly printed in disassembly. (thanks to Lutz Euler)
702 * bug fix: class slots in redefined classes preserve their old
703 values. (thanks to Bruno Haible and Nikodemus Siivola)
704 * bug fix: compilation of funcalls of CXX+R (e.g. CDDR) now
705 succeeds. (reported by Marco Baringer)
706 * fixed some bugs revealed by Paul Dietz' test suite:
707 ** READ-SEQUENCE now works on ECHO-STREAMs.
708 ** RATIONALIZE works more according to its specification. (thanks
711 changes in sbcl-0.8.9 relative to sbcl-0.8.8:
712 * deprecation of old extension: *DEBUG-PRINT-LEVEL* and
713 *DEBUG-PRINT-LENGTH* are now deprecated in favor of the new, more
714 general SB-DEBUG:*DEBUG-PRINT-VARIABLE-ALIST* mechanism. (This
715 should matter to you only if you rebind the printer control
716 variables and then find you want different bindings in the
717 debugger than in the ordinary execution of your program.)
718 * The runtime build system has been tweaked to support building
719 (on SPARC/SunOS) using a C compiler which invokes Sun's own
720 assembler and linker. (thanks to Nikodemus Siivola)
721 * Unbound, undefined, undeclared variables now trigger full
722 WARNINGs, not just STYLE-WARNINGs, on the assumption that this is
723 more often programmer error than deliberate exploitation of undefined
725 * optimization: the hash algorithm for strings has changed to one
726 that is less vulnerable to spurious collisions. (thanks to Juho
728 * optimization: VECTOR-POP, VECTOR-PUSH-EXTEND and REPLACE do less
729 needless bounds checking. (thanks to Juho Snellman)
730 * optimization: implemented multiplication as a modular
731 (UNSIGNED-BYTE 32) operation on the PPC backend.
732 * fixed some bugs revealed by Paul Dietz' test suite:
733 ** ADJUST-ARRAY now copies the datum in a zero rank array if
735 ** ADJUST-ARRAY no longer adjusts non-adjustable arrays.
736 ** MAKE-STRING-INPUT-STREAM accepts NIL as a value for :END.
737 ** MAKE-STRING-INPUT-STREAM functions correctly for strings with
739 ** CLEAR-INPUT accepts NIL and T for its (optional) stream
741 ** Ratios can now be printed correctly with *PRINT-BASE* bound to
743 ** ECHO-STREAMs no longer attempt to echo the end of file value to
744 their output stream on EOF from read.
745 ** CONCATENATED-STREAM-STREAMS discards constituent streams which
746 have been read to end-of-file.
747 ** CLOSE works as expected on the null CONCATENATED-STREAM, and on
749 ** Printing symbols with *PRINT-CASE* :CAPITALIZE respects the
750 description of determination of which consecutive characters
752 ** Printing the "Space" character with escaping on now yields "#\\ ",
753 rather than "#\\Space", as mandated by ANSI 22.1.3.2.
754 ** Reading floating-point numbers with *READ-BASE* set to a number
755 less than 10 works correctly.
756 ** Reading floating-point numbers with *READ-BASE* set to a number
757 more than 10 works correctly.
758 ** Printing with *PRINT-READABLY* targets the standard readtable, not
759 the readtable currently in effect.
761 changes in sbcl-0.8.8 relative to sbcl-0.8.7:
762 * minor incompatible change: parsing of namestrings on a physical
763 (Unix) host has changed; numbers after the final #\. in a
764 namestring are no longer interpreted as a version field. This is
765 intented to be largely invisible to the user, except that the
766 meaning of the namestring "*.*.*" has changed: it now refers to a
767 pathname with :TYPE :WILD :NAME #<pattern "*.*">. This namestring
768 should usually be replaced by
769 (make-pathname :name :wild :type :wild :version :wild)
770 with the added benefit that this is more likely to be portable.
771 As a consequence of this change, the :IF-EXISTS :NEW-VERSION
772 option to OPEN now signals an error if the file being opened
773 exists; this may have an impact on existing code.
774 * fixed bug 190: RUN-PROGRAM should now work properly, respecting
775 signals received, on the PowerPC platforms (both Linux and
776 Darwin). (thanks to Pierre Mai for pointing out the location of
778 * several fixes on OS X: The system now builds and runs cleanly on
779 Panther (10.3), and works around sigreturn bug (no more SIGFPEs).
780 (thanks to Brian Mastenbrook)
781 * bug fix: DECODE-UNIVERSAL-TIME now accepts timezone arguments with
782 second-resolution: integer multiples of 1/3600 between -24 and 24.
783 (thanks to Vincent Arkesteijn)
784 * bug fix: functions =, /=, <, <=, >, >= did not check the argument
785 type when called with 1 argument; PEEK-CHAR checked type of
786 PEEK-TYPE only after having read first character from a
787 stream. (reported by Peter Graves)
788 * bug fix: the garbage collector now has much better locality
789 behaviour, and in particular no longer treats all memory as being
790 exhausted when many small objects point to each other in a deeply
792 * bug fix: arrays specialized on (UNSIGNED-BYTE 15) are now
793 recognized as being TYPEP their class.
794 * bug fix: the PUSHNEW documentation string has been corrected.
795 (thanks to Vincent Arkesteijn)
796 * bug fix: defaulting of the value for the last of an atypically
797 large number of multiple values being bound was not being
798 performed correctly on the Alpha or PPC platforms
799 * optimization: implemented multiplication as a modular
800 (UNSIGNED-BYTE 32) operation on the x86 backend.
801 * optimization: SEARCH on simple-base-strings can now be open-coded.
802 (see also contrib/compiler-extras.lisp for inspiration for
803 teaching the compiler about the Boyer-Moore algorithm).
804 * value, returned by MAX (and MIN) called with several EQUALP, but
805 not EQL, arguments now does not depend on compiler settings.
806 * fixed some bugs revealed by Paul Dietz' test suite:
807 ** in stack analysis liveness information is propagated from
808 non-local entry points.
809 ** pathwise CAST removing failed when the CAST node did not start
811 ** INPUT-STREAM-P, OUTPUT-STREAM-P, STREAM-ELEMENT-TYPE and
812 OPEN-STREAM-P signal a TYPE-ERROR if their argument is not a
814 ** LOAD-LOGICAL-PATHNAME-TRANSLATIONS returns NIL if the logical
815 host is already defined.
816 ** RENAME-FILE works on streams instead of signalling an internal
818 ** PEEK-CHAR uses the current readtable when determining whether
819 or not a character is whitespace.
820 ** MERGE-PATHNAMES handles the case when the pathname does not
821 specify a name while the default-pathname specifies a version.
822 ** Pathnames now stand a better chance of respecting print/read
824 ** Attempting to use standardized file system operators with a
825 pathname with invalid :DIRECTORY components signals a
827 ** OPEN :DIRECTION :IO no longer fails to work on non-existent
829 ** DIRECTORY on logical pathnames is more correct.
830 ** CLEAR-INPUT, CLEAR-OUTPUT, FINISH-OUTPUT and FORCE-OUTPUT
831 signal a TYPE-ERROR if their argument is not a stream.
832 ** READ-BYTE and WRITE-BYTE signal a TYPE-ERROR if their stream
833 designator argument does not designate a stream.
834 ** OPEN-STREAM-P and INPUT-STREAM-P on synonym streams work by
835 examining the synonym.
836 ** STREAM-ELEMENT-TYPE and FRESH-LINE on broadcast-streams now
838 ** OPEN and WITH-OPEN-STREAM allow opening streams with
839 element-type larger than ([UN]SIGNED-BYTE 32).
841 changes in sbcl-0.8.7 relative to sbcl-0.8.6:
842 * When built with the :SB-FUTEX feature, threaded builds now take
843 advantage of the "fast userspace mutex" facility in Linux kernel 2.6
844 for faster/more reliable mutex and condition variable support.
845 * Incompatible change (but one you probably shouldn't have been using
846 anyway): the interface and code for arbitrating between multiple
847 threads in the same user session has been redesigned.
848 * bug fix: GET-SETF-EXPANSION no longer throws an internal type
849 error when called without an explicit environment argument.
850 (thanks to Nikodemus Siivola)
851 * bug fix: buffered :DIRECTION :IO streams are less likely to become
852 confused about their position. (thanks to Adam Warner and Gerd
854 * bug fix: Pretty printing backquoted forms with unquotations in the
855 argument list position of various code constructs such as LAMBDA
856 now works correctly. (reported by Paul Dietz)
857 * bug fix: Pretty printing unquotations no longer loses all
858 stream position information.
859 * optimization: performance of string output streams is now less
860 poor for multiple small sequence writes.
861 * optimization: performance of CSUBTYPEP in the presence of complex
862 expressions involving CONS and NOT many times has been improved.
863 (reported by Paul Dietz)
864 * ASDF-INSTALL bug fix: now parses *PROXY* properly. (thanks to
866 * SB-SIMPLE-STREAMS enhancement: simple-streams can now be used as
867 streams for the REPL, for the debugger, and so on. (thanks to
869 * DEFINE-CODITION is more efficient. (thanks to Brian Mastenbrook)
870 * fixed some bugs revealed by Paul Dietz' test suite:
871 ** the value of the :REHASH-THRESHOLD argument to MAKE-HASH-TABLE
872 is ignored if it is too small, rather than propagating through
873 to cause DIVIDE-BY-ZERO or FLOATING-POINT-OVERFLOW errors.
874 ** extremely complex negations of CONS types were not being
875 sufficiently canonicalized, leading to inconsistencies in
877 ** VALUES tranformer lost derived type.
879 changes in sbcl-0.8.6 relative to sbcl-0.8.5:
880 * fixed a bootstrapping bug: the build process no longer assumes
881 that the various BOOLE-related constants have the same value in
882 host and target lisps. (noted by Paul Dietz' test suite on an
883 SBCL binary built from CLISP)
884 * The system can now be dynamically linked on the MIPS platform,
885 which enables dynamic loading of foreign code from Lisp. (thanks
886 to Ralf Baechle for discussions on the MIPS ABI)
887 * The system now records debugging information for its own source
888 files in a filesystem-position-independent manner, relative to
889 the "SYS" logical host.
890 * fixed a compiler bug: MV-LET convertion did not check references
891 to the "max args" entry point. (reported by Brian Downing)
892 * tweaked disassembly notes to be less confident about proclaiming
893 some instruction as an LRA. (thanks to Brian Downing)
894 * contrib update: SB-ACLREPL is now threadsafe; multiple listeners
895 now each have their own history, command character, and other
896 characteristics. (thanks to David Lichteblau)
897 * fixed some bugs revealed by Paul Dietz' test suite:
898 ** compiler failure in compiling LOGAND expressions including a
900 ** Implementation of ASH-MOD32 on X86 and PPC did not work for the
901 shift greater than 32.
902 ** FLUSH-DEST did not mark blocks for type check regeneration.
903 ** HANDLER-CASE failed to accept declarations in handler clauses
904 in some circumstances.
906 changes in sbcl-0.8.5 relative to sbcl-0.8.4:
907 * New code in contrib/sb-introspect (still probably not entirely
908 stable yet) provides some support for smart Lisp development
909 environments like SLIME.
910 * The conditions signalled for errors occurring when loading .fasl
911 files have been systematized (inheriting from SB-EXT:INVALID-FASL)
912 in a way which should help ASDF recover gracefully.
913 * The REQUIRE/PROVIDE behavior of *MODULE-PROVIDER-FUNCTIONS*
914 stuff has been cleaned up. If you code contrib/ stuff, this might
915 affect you, and you can look at contrib/README, contrib/STANDARDS,
916 and/or the 0.8.4.27 diff to check.
917 * In full calls the compiler now does not generate checks for declared
918 argument types for all arguments.
919 * various threading fixes
920 ** and some experimental patches which didn't make it into
921 the main tree for this release, but which are shipped in
922 contrib/experimental-thread.patch as a possible fix for some
923 failures (deadlock, spinning...) in GC-intensive multithreaded
925 * fixed PPC build problem (source code incompatibility of different
926 library versions): added offsetof() hackery which attempts to divine
927 where glibc maintainers put uc_mcontext today
928 * fixed bug 282: compiler does not trust type assertions while passing
929 arguments to a full call.
930 * fixed bug 261: compiler allows NIL or "no value" to be accepted for
931 &OPTIONAL VALUES type parameter.
932 * fix bug 214: algorithm for noting rejected templates is now more
933 similar to that of template seletion. (also reported by rydis on
935 * fixed bug 141b: printing backquoted information readably and prettily
936 inserts a space where necessary.
937 * bug fix: obviously wrong type specifiers such as (FIXNUM 1) or
938 (CHARACTER 10) are now reported as errors, rather than propagated
939 as unknown types. (reported by piso on #lisp)
940 * bug fix: the :IF-EXISTS argument to OPEN now behaves correctly
941 with values NIL and :ERROR. (thanks to Milan Zamazal)
942 * fixed bug 191c: CLOS now does proper keyword argument checking as
943 described in CLHS 7.6.5 and 7.6.5.1.
944 * bug fix: LOOP forms using NIL as a for-as-arithmetic counter no
945 longer raise an error; further, using a list as a for-as-arithmetic
946 counter now raises a meaningful error.
947 * fixed bug 213a: even fairly unreasonable CONS type specifiers are
948 now understood by sequence creation functions such as MAKE-SEQUENCE
950 * fixed bug 46k: READ-BYTE now signals an error when asked to read from
951 a STRING-INPUT-STREAM.
952 * compiler enhancement: SIGNUM is now better able to derive the type
954 * type declarations inside WITH-SLOTS are checked. (reported by
956 * fixed some bugs revealed by Paul Dietz' test suite:
957 ** incorrect optimization of TRUNCATE for a positive first
958 argument and negative second.
959 ** compiler failure in let-convertion during flushing dead code.
960 ** compiler failure while deriving type of TRUNCATE on an
961 interval, containing 0.
962 ** ASH of a negative bignum by a negative bignum count now returns
964 ** intersection of CONS types now canonicalizes properly, fixing
965 inconsistencies in SUBTYPEP.
967 changes in sbcl-0.8.4 relative to sbcl-0.8.3:
968 * incompatible change: The --disable-debugger command line
969 option now clobbers the debugger at a more fundamental
970 level, by redefining #'INVOKE-DEBUGGER instead of by
971 rebinding *DEBUGGER-HOOK*. The main difference is that BREAK
972 is specified by ANSI to ignore *DEBUGGER-HOOK* and
973 INVOKE-DEBUGGER regardless. Under the old system, BREAK would
974 enter the debugger REPL and then suffer recursive errors
975 because *DEBUG-IO* is also messed up in --disable-debugger mode;
976 while under the new system, BREAK in --disable-debugger mode
977 terminates the system just as an unhandled error would.
978 * fixed compiler performance when processing loops with a step >1;
979 * bug fix: DOCUMENTATION now retrieves generic function
980 documentation. Also, DOCUMENTATION and (SETF DOCUMENTATION)
981 support has been systematized, and now supports the methods
982 specified by ANSI, along with a default method and a method for
983 slot documentation. (reported by Nathan Froyd)
984 * bug fix: effective methods associated with a generic function are
985 no longer cached over a change of that generic function's method
986 combination. (reported by Andreas Fuchs)
987 * bug fix: RUN-PROGRAM now does not fail if some element in $PATH
988 names a non-existent directory. (thanks to Andreas Fuchs)
989 * bug fix: ROUND and TRUNCATE could, under certain circumstances on
990 the PPC platform, lead to stack corruption; this has been fixed.
991 (reported by Rainer Joswig)
992 * bug fix: ASH on an (UNSIGNED-BYTE 32) with a shift of -32 or lower
993 no longer ever returns 1 instead of 0. (thanks to Lars Brinkhoff)
994 * fixed bug 285: TRUNCATE on bignum arguments, and indeed bignum
995 arithmetic in general, is now much more reliable on the PPC
997 * bug fix: LOGCOUNT on (UNSIGNED-BYTE 64) objects on the Alpha
998 platform now returns the right answer.
999 * optimization: restored some effective method precomputation in
1000 CLOS (turned off by an ANSI fix in sbcl-0.8.3); the amount of
1001 precomputation is now tunable.
1002 * optimization: compiler-internal data structure use has been
1003 reviewed, and changes have been made that should improve the
1004 performance of the compiler by about 20%.
1005 * optimization: performance of FILL (and :INITIAL-ELEMENT) on
1006 simple-base-strings and simple-bit-vectors is improved.
1007 * optimization: the optimization of 32-bit logical and arithmetic
1008 functions introduced in version 0.8.3 on the x86 has been
1009 implemented on the mips, ppc and sparc platforms; an
1010 implementation of the same facility, but for 64-bit arithmetic,
1011 has been added for the alpha.
1012 * microoptimization: the compiler is better able to make use of the
1013 x86 LEA instruction for multiplication by constants.
1014 * bug fix: in some situations compiler did not report usage of
1015 generic arithmetic in (SPEED 3) policy.
1016 * bug 145b fix: compiler used wrong type specifier while converting
1017 MEMBER-types to numeric.
1018 * bug fix: COMPILE-FILE must bind *READTABLE*. (reported by Doug
1020 * bug fix: (SETF AREF) on byte-sized-element arrays with constant
1021 index argument now works properly on the Alpha platform.
1022 * bug fix: floating point exception treatment on the Alpha platform
1024 * bug fix: FILE-POSITION works much better on string input and
1025 output streams. (thanks to Nikodemus Siivola)
1026 * bug fix: many threading/garbage collection symptoms sorted.
1027 SB-THREAD:INTERRUPT-THREAD now safe to call on a thread that
1028 might be pseudo-atomic.
1029 * internal change: Stopping for GC is now done with signals not
1030 ptrace. GC is now done in whichever thread wanted it, instead of
1032 * bug fix: GC hooks (missing since 0.8) reinstated, so finalizers
1034 * bug fix: result form in DO is not contained in the implicit
1036 * incompatible change: ICR structure is changed; the value part of
1037 CONTINUATION is now called LVAR; corresponding functions are
1038 renamed (e.g. SB-C::CONTINUATION-TYPE has become SB-C::LVAR-TYPE).
1039 * added type deriver for ISQRT (thanks to Robert E. Brown).
1040 * bug fix: better support for loading from the command line when an
1041 initialization file sets (READTABLE-CASE *READTABLE*). (thanks
1043 * fixed some bugs revealed by Paul Dietz' test suite:
1044 ** the RETURN clause in LOOP is now equivalent to DO (RETURN ...).
1045 ** ROUND and FROUND now give the right answer when given very
1046 small float arguments.
1047 ** (FLOAT X) for X of type DOUBLE-FLOAT now returns X in all
1049 ** optimizer for (EXPT X 0) did not work for X not of type FLOAT.
1050 ** (GCD 0 <negative-integer>) returned <negative-integer>.
1051 ** LCM should return a non-negative integer.
1052 ** PARSE-INTEGER returned the index of a terminator instead of the
1053 upper bounding index of a substring in case :JUNK-ALLOWED NIL.
1054 ** PARSE-INTEGER returned an incorrect index being applied to a
1056 ** LCM with two arguments of 0 returns 0 rather than signalling
1058 ** unsigned addition of a 32-bit constant with the high bit set no
1059 longer causes an internal compiler error on the x86.
1060 ** LOGBITP accepts a non-negative bignum as its INDEX argument.
1061 ** compiler incorrectly derived types of DPB and DEPOSIT-FIELD
1062 with negative last argument.
1063 ** byte specifiers with zero size and position no longer cause
1064 an error during type derivation.
1065 ** bignum multiplication on the Alpha platform now returns the
1067 * porting: The system now builds on SuSE AMD64, although it still
1068 generates a 32-bit binary.
1069 * .fasl file incompatibility: The fasl file version number has
1070 been incremented (because of the changes to internal compiler
1071 data structures referred to above).
1073 changes in sbcl-0.8.3 relative to sbcl-0.8.2:
1074 * SBCL now builds and runs on MacOS X (version 10.2), or perhaps
1075 more accurately, on the Darwin kernel running on PowerPC hardware.
1076 (thanks to Brian Mastenbrook, Pierre Mai and Patrik Nordebo)
1077 * Compiler code deletion notes now signal a condition of type
1078 SB-EXT:CODE-DELETION-NOTE (a subtype of SB-EXT:COMPILER-NOTE) with
1079 an associated MUFFLE-WARNING restart.
1080 * The compiler now performs limited argument count validation of
1081 constant format strings in FORMAT, and where appropriate in ERROR,
1082 CERROR and WARN. (thanks to Gerd Moellmann)
1083 * New ASDF-INSTALL contrib can be used for automatic download and
1084 installation of third-party Lisp code from CCLAN or other sites
1086 * Threaded builds (:SB-THREAD) now support SB-THREAD:INTERRUPT-THREAD,
1087 which forces another thread to execute a function supplied by the
1089 * bug 75 fix: WITH-OUTPUT-TO-STRING (and MAKE-STRING-OUTPUT-STREAM)
1090 now accept and act upon their :ELEMENT-TYPE keyword argument.
1091 (reported by Martin Atzmueller, Edi Weitz)
1092 * bug fix: FILE-POSITION now accepts position designators up to
1093 ARRAY-DIMENSION-LIMIT or the extreme of the off_t range, whichever
1094 is the greater. (thanks to Patrik Nordebo)
1095 * bug fix: MAKE-ARRAY ignored :INITIAL-CONTENTS NIL. (reported by
1096 Kalle Olavi Niemitalo)
1097 * bug fix: the CLASS-PROTOTYPE of the GENERIC-FUNCTION class is now
1098 printable. (reported by Eric Marsden)
1099 * bug fix in sb-posix: mmap() now works on systems with a 64-bit
1100 off_t, including Darwin and FreeBSD. (thanks to Andreas Fuchs)
1101 * x86 bug fix in control stack exhaustion checking: now shows backtrace
1102 * bug fix in WITH-TIMEOUT: now the body can have more than one form.
1103 (thanks to Stig Sandoe)
1104 * bug fix in READ-SEQUENCE: READ-SEQUENCE following PEEK-CHAR or
1105 UNREAD-CHAR now correctly includes the unread character in the
1106 target sequence. (thanks to Gerd Moellmann)
1107 * bug fix in threaded builds: the system can now be suspended and
1108 resumed by shell job control with minimal disruption.
1109 * bug fixes in times and timezones >2038AD
1110 * better handling of "where is GNU make?" problem in build scripts
1111 (thanks to Nikodemus Siivola)
1112 * new optimization: inside a named function any reference to a
1113 function with the same name is considered to be a self-reference;
1114 this behaviour is controlled with SB-C::RECOGNIZE-SELF-CALLS
1115 optimization quality.
1116 * new optimization on x86: logical functions and + now have
1117 optimized (UNSIGNED-BYTE 32) versions, which are automatically
1118 used when the result is truncated to 32 bits.
1119 * VALUES declaration is partially enabled.
1120 * fixes in SB-GROVEL (thanks to Andreas Fuchs)
1121 * fixed some bugs revealed by Paul Dietz' test suite:
1122 ** The system now obeys the constraint imposed by
1123 UPGRADED-ARRAY-ELEMENT-TYPE that the upgraded array element
1124 types form a lattice under type intersection.
1125 ** FFLOOR, FTRUNCATE, FCEILING and FROUND work with integers.
1126 ** ASSOC now ignores NIL elements in an alist.
1127 ** CEILING now gives the right answer with MOST-NEGATIVE-FIXNUM
1128 and (1+ MOST-POSITIVE-FIXNUM) answers.
1129 ** The addition of a method with invalid qualifiers to a generic
1130 function does not cause an error to be signalled immediately;
1131 a warning is signalled, and the error is generated only on
1132 calling the generic function.
1133 * changed .fasl file version number, in part to add type codes for
1134 new array subtypes UNSIGNED-BYTE 7, 15, 29, and 31 mandated by
1135 obscure ANSI requirements
1137 changes in sbcl-0.8.2 relative to sbcl-0.8.1:
1138 * fixed bug 148: failure to inline-expand a local function left
1139 garbage, confusing the compiler.
1140 * fixed bugs 3cd: structure slot readers perform type check if the
1141 slot can have an invalid value (i.e. it is either not initialized
1142 or can be written with a less specific slot writer).
1143 * bug fix: the compiler now traps array references to elements off
1144 the end of an array; previously, the bounds checking in some
1145 circumstances could go off-by-one.
1146 * improved MACHINE-VERSION, especially on Linux (thanks to Lars
1148 * type declarations for array element types now obey the description
1149 on the CLHS page "Declaration TYPE", as per discussions on
1150 sbcl-help around 2003-05-08. This means that a declaration
1151 (TYPE (ARRAY FOO) BAR) means that, within the scope of the
1152 declaration, all references to BAR will be asserted or assumed
1153 (with THE, so dependent on compiler policy) to involve objects of
1154 type FOO. Note that no such declaration is implied in
1155 (MAKE-ARRAY .. :ELEMENT-TYPE 'FOO).
1156 * declared types of functions from the "Conditions"
1157 chapter. (reported by Paul Dietz)
1158 * bug fix: CERROR accepts a function as its first argument.
1159 * bug fix: NTH an NTHCDR accept a bignum as index
1160 arguments. (reported by Adam Warner)
1161 * optimization: character compare routines now optimize comparing
1162 against a constant character. (reported by Gilbert Baumann)
1163 * bug fix: (SETF AREF) on byte-sized-element arrays with constant index
1164 argument now works properly on the MIPS platform.
1165 * fixed compiler failure on (TYPEP x '(NOT (MEMBER 0d0))).
1166 * repeated evaluation of the same DEFSTRUCT, a slot of which is
1167 declared to have a functional type, does not cause an error
1169 * fixed bug: sometimes MAKE-INSTANCE did not work with classes with
1170 many :DEFAULT-INITARGS. (reported by Istvan Marko)
1171 * fixed bug: if last continuation of a deleted block has a
1172 destination, this destination should be deleted too. (reported by
1174 * fixed a bug in the bootstrap process: the host compiler's values
1175 of ARRAY-DIMENSION-LIMIT and ARRAY-TOTAL-SIZE-LIMIT no longer leak
1176 into the newly-built SBCL. (reported by Eric Marsden on #lisp,
1177 test case from Patrik Nordebo)
1178 * improved the ability of the disassembler on the PPC platform to
1179 provide helpful disassembly notes.
1180 * SB-MOP:CLASS-PROTOTYPE on built-in-classes returns an instance of
1181 the class in more cases than previously.
1182 * bug fix: FILE-POSITION now understands :START and :END for
1183 STRING-INPUT-STREAMs. (thanks to Nikodemus Siivola)
1184 * bug fix: (SIGNED-BYTE 8) streams no longer return (UNSIGNED-BYTE
1185 8) data. (thanks to David Lichteblau)
1186 * bug fix: it is possible to add a method to a generic function
1187 without lambda list.
1188 * bug fix: reader failed to signal END-OF-FILE inside an
1189 object representation. (reported by Nikodemus Siivola)
1190 * fixed some bugs revealed by Paul Dietz' test suite:
1191 ** LAST and [N]BUTLAST should accept a bignum.
1192 ** condition slot accessors are methods.
1193 ** (VECTOR NIL) is a subtype of STRING.
1195 changes in sbcl-0.8.1 relative to sbcl-0.8.0:
1196 * minor incompatible change: some nonsensical specialized lambda
1197 lists (used in DEFMETHOD) which were previously ignored now signal
1199 * minor incompatible change: the system is now aware of the types of
1200 variables in the COMMON-LISP package, and will signal errors for
1201 most violations of these type constraints (where previously they
1202 were silently accepted).
1203 * minor incompatible change: COMPILE-FILE now uses the freedom
1204 afforded (ANSI 3.2.2.3) to use derived function types for
1205 functions defined in the same file. This also permits the system
1206 to warn on static type mismatches and function
1207 redefinition. (Currently it does not work with high DEBUG level.)
1208 * minor incompatible change: VALUES declaration is disabled.
1209 * When issuing notes, the compiler now signals a condition of type
1210 SB-EXT:COMPILER-NOTE, and provides an associated MUFFLE-WARNING
1211 restart for use in user handlers. It is expected that the
1212 COMPILER-NOTE condition will eventually become a condition
1213 supertype to a hierarchy of note types, which will then be
1214 handleable in a similar fashion. However, at the moment, no such
1215 note subtypes yet exist. (SB-INT:SIMPLE-COMPILER-NOTE exists,
1216 but it's an implementation detail, not a classification for the
1218 * Changes in type checking closed the following bugs:
1219 ** type checking of unused values (192b, 194d, 203);
1220 ** template selection based on unsafe type assertions (192c, 236);
1221 ** type checking in branches (194bc).
1222 * A short form of VALUES type specifier has ANSI meaning (it has
1223 increased the number of situations when SBCL cannot perform type
1225 * fixed bug in DEFSTRUCT: once again, naming structure slots with
1226 keywords or constants is permissible.
1227 * STREAM-READ-SEQUENCE and STREAM-WRITE-SEQUENCE now have methods
1228 defined on the relevant FUNDAMENTAL-BINARY-{INPUT,OUTPUT}-STREAM
1229 classes. (thanks to Antonio Martinez)
1230 * improved ANSIness in DESCRIBE: The DESCRIBE function no longer
1231 outputs FRESH-LINE or TERPRI, and no longer converts its stream
1232 argument to a pretty-print stream. Instead, it leaves any such
1233 operations to DESCRIBE-OBJECT methods.
1234 * bug fix: APROPOS now respects the EXTERNAL-ONLY flag. (reported
1236 * bug fix: NIL is now a valid destructuring argument in DEFMACRO
1237 lambda lists. (thanks to David Lichteblau)
1238 * bug fix: Defining a generic function with a :METHOD-CLASS being a
1239 subclass of STANDARD-METHOD no longer causes stack exhaustion.
1240 (thanks to Gerd Moellmann)
1241 * fixed bug 246: increased compilation speed of long
1242 MULTIPLE-VALUE-BIND (and likewise of NTH-VALUE with a constant
1244 * a contributed module implementing COMPILER-LET and MACROEXPAND-ALL
1246 * DEFCONSTANT now throws a condition of type
1247 SB-EXT:DEFCONSTANT-UNEQL if it is being asked to redefine a
1248 constant to a non-EQL value; CONTINUE and ABORT restarts
1249 respectively change and preserve the value.
1250 * fixed bug 63: The code walker, part of the implementation of CLOS,
1251 is now better at handling symbol macros.
1252 * bug fix: There is no longer an internal implementation type named
1253 CL:LENGTH. (reported by Raymond Toy)
1254 * bug fix: In macro-like defining macros/special operators the
1255 implicit block does not enclose the lambda list.
1256 * fixed bugs 10 and 43: Bare VALUES, AND, OR and MEMBER symbols (not
1257 enclosed in parentheses) are not suitable as type specifiers, and
1258 their use properly signals an error now.
1259 * bug fix: An argument count mismatch for a type specifier in code
1260 being compiled no longer causes an unhandled error at compile
1261 time, but signals a compile-time warning.
1262 * fixed simple vector readable printing
1263 * bug fix: DESCRIBE takes more care over whether the class
1264 precedence list slot of a class is bound before accessing it.
1265 (reported by Markus Krummenacker)
1266 * bug fix: FORMATTER can successfully compile pretty-printer format
1267 strings which use variants of the ~* directive inside.
1268 * bug fix: SEARCH now applies its TEST predicate to the elements of
1269 the arguments in the correct order. (thanks to Wolfhard Buss)
1270 * fixed bug 235b: The compiler uses return types of MAPCAR and friends
1271 in type inference. (thanks to Robert E. Brown)
1272 * bug fix: Reading in symbols with an explicit package name of ""
1273 (e.g. '||::FOO) now works correctly. (reported by Henrik Motakef)
1274 * fixed some bugs revealed by Paul Dietz' test suite:
1275 ** NIL is now allowed as a structure slot name.
1276 ** Arbitrary numbers, not just REALs, are allowed in certain
1277 circumstances in LOOP for-as-arithmetic clauses.
1278 ** Multiple class redefinitions before slot access no longer
1279 causes a type error.
1280 ** (SETF FIND-CLASS) now accepts NIL as an argument to remove the
1281 association between the name and a class.
1282 ** Generic functions with non-standard method-combination and over
1283 five methods all of which return constants no longer return NIL
1284 after the first few invocations. (thanks to Gerd Moellmann)
1285 ** CALL-NEXT-METHOD with no arguments now passes the original
1286 values of the arguments, even in the presence of assignment.
1287 ** Functions [N]SUBST*, LAST, NRECONC, [N]SUBLIS may return any
1289 ** DISASSEMBLE works with closures and funcallable instances.
1290 ** ADD-METHOD now returns the generic function, not the new method.
1291 ** FIND-METHOD signals an error if the lengths of the specializers
1292 is incompatible with the generic function, even if the ERRORP
1294 ** TYPE-OF returns recognizeable subtypes of all built-in-types of
1295 which its argument is a member.
1296 ** DEFCLASS only redefines the class named by its class-name
1297 argument if that name is the proper name of the class;
1298 otherwise, it creates a new class.
1299 ** SLOT-UNBOUND now correctly initalizes the CELL-ERROR-NAME slot
1300 of the UNBOUND-SLOT condition to the name of the slot.
1301 ** (SETF (AREF bv 0) ...) did not work for bit vectors.
1302 ** SLOT-UNBOUND and SLOT-MISSING now have their return values
1303 treated by SLOT-BOUNDP, SLOT-VALUE, (SETF SLOT-VALUE) and
1304 SLOT-MAKUNBOUND in the specified fashion.
1306 changes in sbcl-0.8.0 relative to sbcl-0.8alpha.0
1307 * SBCL now builds using CLISP (version of late April 2003 from CVS) as
1308 cross-compilation host. As a consequence, we can now bootstrap our
1309 way up to SBCL starting with a bare gcc toolchain and human-readable
1310 source code (first the source to CLISP, then the source to SBCL).
1311 * A contributed module containing a partial implementation of the
1312 simple-streams interface has been included. (thanks to Rudi
1314 * A contributed module implementing the RFC1321 Message Digest
1315 Algorithm, known as MD5, has been included.
1316 * minor incompatible change: The :NEGATIVE-ZERO-IS-NOT-ZERO feature
1317 no longer has any effect, as the code controlled by this feature
1318 has been deleted. (As far as we know, no-one has ever built using
1319 this feature, and its semantics were confused in any case).
1320 * minor incompatible change: As a consequence of making SLOT-EXISTS-P
1321 work on conditions (as required by the ANSI specification),
1322 SLOT-VALUE, (SETF SLOT-VALUE) and SLOT-BOUNDP likewise have the
1323 expected behaviour on conditions. Users should note, however,
1324 that such behaviour is not required by the ANSI specification,
1325 and so use of this behaviour may render their code unportable.
1326 * fixed some bugs revealed by Paul Dietz' test suite:
1327 ** the GENERIC-FUNCTION type is no longer disjoint from FUNCTION
1329 ** &ENVIRONMENT parameter in macro lambda list is bound first.
1330 ** SXHASH on condition objects no longer returns NIL.
1331 ** :ALLOCATION :CLASS slots are better treated; their values are
1332 updated on class redefinition, and initforms inherited from
1333 superclasses are applied.
1334 ** REMOVE-METHOD returns its generic function argument even when
1335 no method was removed.
1336 ** SHARED-INITIALIZE now initializes the values of the requested
1337 slots, including those with :ALLOCATION :CLASS.
1338 ** ALLOCATE-INSTANCE now works on structure classes defined via
1339 DEFSTRUCT (and not just by those from DEFCLASS :METACLASS
1341 ** SLOT-EXISTS-P now works on conditions, as well as structures
1343 ** MAKE-LOAD-FORM now has the required methods on
1344 STRUCTURE-OBJECT, CONDITION and STANDARD-OBJECT.
1345 ** MAKE-LOAD-FORM-SAVING-SLOTS no longer returns a special
1346 keyword, and now implements the SLOT-NAMES argument.
1347 ** methods with &OPTIONAL arguments no longer allow too many
1348 arguments to be passed in the call without error.
1349 ** DEFGENERIC now checks that the :ARGUMENT-PRECEDENCE-ORDER
1350 option is consistent with the required arguments of the generic
1351 function lambda list.
1352 * bug fix: REQUIRE accepts a string designator. (Thanks to
1354 * bug fix: SB-MOP:DIRECT-SLOT-DEFINITION-CLASS and
1355 SB-MOP:EFFECTIVE-SLOT-DEFINITION-CLASS now have the
1356 specified-by-AMOP lambda list of (CLASS &REST INITARGS).
1357 * bug fix: The compiler now checks for duplicated variables in macro
1359 * bug fix: SETQ on globals returns the correct value.
1360 * fixed bug 47.d: (DEFGENERIC IF (X)) now signals a PROGRAM-ERROR,
1361 not a COMPILER-ERROR (followed by some other strange error on
1362 choosing the CONTINUE restart).
1363 * bug fix: make.sh and friends are now more consistent in the way that
1364 they look for GNU "make".
1366 changes in sbcl-0.8alpha.0 relative to sbcl-0.7.14
1367 * experimental native threads support (on x86 Linux >=2.4 only).
1368 This is not compiled in by default: you need to add :SB-THREAD to
1369 the target features. See the "Beyond ANSI" chapter of the manual
1371 * fix for longstanding nonANSIism: The old distinction between
1372 CL:CLASS objects and SB-PCL:CLASS objects has been eliminated.
1373 The return value from CL:FIND-CLASS is now a CLOS class, and
1374 likewise that of CL:CLASS-OF; CL:BUILT-IN-CLASS,
1375 CL:STRUCTURE-CLASS and CL:STANDARD-CLASS name CLOS classes.
1376 * An interface to the MetaObject Protocol, as described in Kiczales,
1377 des Rivieres and Bobrow's "The Art of the Metaobject Protocol",
1378 MIT Press, 1991, is available from the SB-MOP package.
1379 * incompatible change: the SB-PCL package should now be considered
1380 a private implementation detail, and no longer a semi-private MOP
1382 * minor incompatible change: due to rearrangement for threads, the
1383 control stack and binding stack are now allocated at arbitrary
1384 addresses instead of being hardcoded per-port. Users affected by
1385 this probably have to be doing advanced things with shared
1386 libraries, and will know who they are.
1387 * minor incompatible change: Previously, all --eval forms used were
1388 processed with READ before any of them were processed with EVAL.
1389 Now each --eval form is processed with both READ and EVAL before
1390 the next --eval form is processed. (Thus package operations like
1391 sbcl --eval "(defpackage :foo)" --eval "(print 'foo::bar)" now
1392 work as the user might reasonably expect.)
1393 * minor incompatible change: *STANDARD-INPUT* is now only an
1394 INPUT-STREAM, not a BIDIRECTIONAL-STREAM. (thanks to Antonio
1396 * minor incompatible change: Y-OR-N-P is now character-oriented,
1397 not line oriented. Also, YES-OR-NO-P now works without errors.
1398 (thanks to Antonio Martinez)
1399 * sb-aclrepl module improvements: an integrated inspector, added
1400 repl features, and a bug fix to :trace command.
1401 * Known functions, which cannot be open coded by the backend, are
1402 considered to be able to check types of their arguments. (fixing
1403 a bug report by Nathan J. Froyd)
1404 * fixed a bug in computing method discriminating functions: It is
1405 now possible to define methods specialized on classes which have
1406 forward-referenced superclasses. (thanks to Gerd Moellmann)
1407 * fixed evaluation order in optional entries (reported by Gilbert
1409 * SB-MOP:ENSURE-CLASS-USING-CLASS now takes its arguments in the
1410 specified-by-AMOP order of (CLASS NAME &REST ARGS &KEY).
1411 * SB-MOP:COMPUTE-EFFECTIVE-SLOT-DEFINITION now takes the
1412 required-by-AMOP NAME argument, as well as CLASS and
1413 DIRECT-SLOT-DEFINITIONS. (thanks to Kevin Rosenberg)
1414 * fixed bug 20: DEFMETHOD can define methods using names that are
1415 not the proper names of classes to designate class specializers.
1416 * bug fix: INTERACTIVE-STREAM-P now works on streams associated with
1417 Unix file descriptors, instead of blowing up. (thanks to Antonio
1419 * Garbage collection refactoring: user-visible change is that a
1420 call to the GC function during WITHOUT-GCING will not do garbage
1421 collection until the end of the WITHOUT-GCING. If you were doing
1422 this you were probably losing anyway.
1423 * fixed bug in MEMBER type: (MEMBER 0.0) is not the same as
1424 (SINGLE-FLOAT 0.0 0.0), because of the existence of -0.0 which is
1425 TYPEP the latter but not the former.
1426 * The compiler issues a full WARNING for calls to undefined functions
1427 with names from the CL package.
1428 * MAP-INTO for a vector destination is open coded. (reported by
1429 Brian Downing on c.l.l)
1430 * bug fix: the long form of DEFINE-METHOD-COMBINATION now accepts a
1431 documentation string.
1432 * fixed some bugs revealed by Paul Dietz' test suite:
1433 ** COPY-ALIST now signals an error if its argument is a dotted
1435 ** Condition slots are now accessed more correctly in the presence
1436 of multiple initargs for a given slot.
1437 ** The USE-VALUE, CONTINUE and STORE-VALUE functions now correctly
1438 exclude restarts of the same name associated with a different
1440 ** DEFCLASS of forward-referenced classes with another
1441 forward-referenced class in the superclasses list no longer
1443 ** Condition slots are now initialized once each, not multiple
1444 times. (thanks to Gerd Moellmann)
1445 ** CONVERT-MORE-CALL failed on a lambda list (&KEY). (thanks to
1447 ** &WHOLE and &REST arguments in macro lambda lists are patterns.
1448 ** NSET-EXCLUSIVE-OR does not return extra elements when its
1449 arguments contain duplicated elements.
1450 ** RESTART-CASE understands local macros.
1451 ** RESTART-CASE associates exactly its own restarts with a condition.
1452 ** ENDP in safe mode checks its argument to be of type LIST.
1453 ** COPY-SYMBOL in a threaded build no longer fails when the symbol
1454 in question is unbound.
1455 ** Optimized MAKE-INSTANCE functions no longer cause internal
1456 assertion failures in the presence of duplicate initargs.
1457 ** SLOT-MAKUNBOUND returns the instance acted upon, not NIL.
1458 ** Side-effectful :DEFAULT-INITARGS have their side-effects
1459 propagated even in the ctor optimized implementation of
1461 ** :ALLOW-OTHER-KEYS NIL is now accepted in an initarg list.
1463 changes in sbcl-0.7.14 relative to sbcl-0.7.13:
1464 * a better implementation of SXHASH on (simple) bit vectors,
1465 measured both in execution speed and in distribution of results
1466 over the positive fixnums, has been installed. Likewise, a better
1467 implementation of EQUAL for simple bit vectors is now available.
1468 * fixed CEILING optimization for a divisor of form 2^k.
1469 * fixed bug 240 (emitting extra style warnings "using the lexical
1470 binding of the symbol *XXX*" for &OPTIONAL arguments). (reported
1471 by Antonio Martinez)
1472 * fixed SXHASH, giving different results for NIL depending on type
1473 declarations (SYMBOL or LIST). (thanks to Gerd Moellmann)
1474 * fixed bug in DEFPARAMETER and DEFVAR: they could assign a lexical
1475 variable. (found by Rolf Wester)
1476 * SBCL does not ignore type declarations for special
1477 variables. (reported by rif on c.l.l 2003-03-05)
1478 * some bug fixes in contrib/sb-aclrepl/
1479 * fixed some bugs revealed by Paul Dietz' test suite:
1480 ** a bug in the CONS type specifier, whereby the CAR and CDR
1481 types got intertwined, has been fixed;
1482 ** the type system is now able to reason about the interaction
1483 between INTEGER and RATIO types more completely;
1484 ** APPEND, [N]REVERSE and NRECONC check that those their
1485 arguments, which must be proper lists, are really so;
1486 ** An array specialized to be unable to hold elements has been
1487 implemented, as required -- yes, really -- by ANSI;
1488 ** GETF and GET-PROPERTIES throw a TYPE-ERROR, not a SIMPLE-ERROR,
1489 on malformed property lists;
1491 changes in sbcl-0.7.13 relative to sbcl-0.7.12:
1492 * incompatible packaging change: in line with Unix convention,
1493 SBCL now looks for its core file in /usr/{local/,}lib/sbcl/sbcl.core
1494 if it's not in $SBCL_HOME. It also sets SBCL_HOME to match.
1495 * REQUIRE and PROVIDE are now optionally capable of doing something
1496 useful. See the documentation string for REQUIRE.
1497 * infrastructure for a managed SBCL contrib system: contributed
1498 modules in this release include:
1499 ** the ASDF system definition facility;
1500 ** an interface to the BSD Sockets API;
1501 ** an ACL-like convenience interface to the repl;
1502 (thanks to Kevin Rosenberg)
1503 ** an implementation of ROTATE-BYTE, with efficient implementation
1505 * fixed a bug in LOG, so that LOG of a rational argument near 1 now
1506 gives a closer approximation to the right answer than previously.
1507 (thanks to Raymond Toy)
1508 * fixed bug 157: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE and
1509 UPGRADED-COMPLEX-PART-TYPE now take (ignored, in all situations)
1510 optional environment arguments, as required by ANSI.
1511 * fixed bugs in other functions taking environment objects, allowing
1512 calls with an explicit NIL environment argument to be compiled
1514 * fixed bug 228: primary return values from
1515 FUNCTION-LAMBDA-EXPRESSION are either NIL or suitable for input to
1516 COMPILE or FUNCTION.
1517 * fixed a bug in DEFSTRUCT: predicates for :NAMED structures with
1518 :TYPE will no longer signal errors on innocuous objects.
1519 * fixed bug 231b: SETQ is better at respecting type declarations in
1520 the lexical environment.
1521 * fixed a bug in DEFCLASS: classes named by symbols with no or
1522 unprintable packages can now be defined.
1523 * fixed a bug in RESTART-BIND: The :TEST-FUNCTION option had been
1524 carelessly renamed to :TEST-FUN. (thanks to Robert E. Brown)
1525 * fixed compiler failure related to checking types of functions.
1526 (reported by Robert E. Brown)
1527 * the compiler is now much more consistent in its error-checking
1528 treatment of bounding index arguments to sequence functions: in
1529 (SAFETY 3) code, errors will be signalled in almost all cases if
1530 invalid sequence bounding indices are passed to functions defined
1531 by ANSI to operate on sequences.
1532 * fixed a bug in the build procedure: documentation of SBCL-specific
1533 packages is now preserved and available in the final Lisp image.
1534 * lifted FDEFINITION lookup out of loops in the implementation of
1535 many list operations. (thanks to Robert E. Brown)
1536 * fixed a bug in the reader: the #n# reader macro now works for
1537 objects of type STANDARD-OBJECT. (reported by Tony Martinez)
1538 * the compiler is now aware that SYMBOL-FUNCTION returns a FUNCTION
1539 and that READ-DELIMITED-LIST returns a LIST. (thanks to Robert
1540 E. Brown and Tony Martinez respectively)
1541 * PCL is now smarter about SLOT-VALUE, (SETF SLOT-VALUE) and
1542 SLOT-BOUNDP: in particular, it is now able to optimize them much
1543 better, and is now not vulnerable to having packages renamed.
1544 Furthermore, a compliance bug has been fixed: SLOT-MISSING is now
1545 always called when a slot is not present in an instance. (thanks
1547 * fixed a bug related to CONCATENATED-STREAMs: PEEK-CHAR will no
1548 longer signal an error on unreading a character following EOF on
1549 the previous constituent stream. (thanks to Tony Martinez)
1550 * fixed some bugs revealed by Paul Dietz' test suite:
1551 ** ARRAY-IN-BOUNDS-P now allows arbitrary integers as arguments,
1552 not just nonnegative fixnums;
1553 ** the logical bit-array operators such as BIT-AND now accept an
1554 explicit NIL for their "opt-arg" argument (to indicate a
1555 freshly-consed result bit-array);
1556 ** ELT now signals an error on an invalid sequence index in safe
1558 ** the type system is now cleverer about negations of numeric
1559 types, and consequently understands the BIGNUM and RATIO types
1561 ** the type system is now cleverer about the interaction between
1562 INTEGER and RATIO types: while bugs still remain, many more
1563 cases are accurately computed;
1564 ** in TYPECASE, OTHERWISE now only introduces an otherwise-clause
1565 if it is in the last clause;
1566 ** CONSTANTLY now correctly returns a side-effect-free function in
1568 ** DECLARE is no longer treated as a special-operator; in
1569 particular, SPECIAL-OPERATOR-P no longer returns T for DECLARE;
1570 * incremented fasl file version number due to the change in the
1571 DEFSTRUCT-SLOT-DESCRIPTION structure.
1573 changes in sbcl-0.7.12 relative to sbcl-0.7.11:
1574 * minor incompatible change: code processed by the "interpreter" or
1575 EVAL now has a compilation optimization policy of (DEBUG 2)
1576 (changed from (DEBUG 1)) to improve debuggability of interactive
1577 development, and to allow the use of the debug RETURN command in
1579 * an experimental implementation of the RETURN command for the
1580 debugger has been included. (thanks to Frederik Kuivinen)
1581 * fixed bug 62: constraints were not propagated into a loop.
1582 * fixed bug in embedded calls of SORT (reported and investigated by
1584 * fixed some bugs revealed by Paul Dietz' test suite:
1585 ** printing and reading of arrays with some dimensions having
1586 length 0 (thanks to Gerd Moellmann);
1587 ** BOA constructor with &AUX argument without a default value does
1588 not cause a type error;
1589 ** CONSTANTP now returns true for all self-evaluating objects.
1591 changes in sbcl-0.7.11 relative to sbcl-0.7.10:
1592 * fixed bug 127: DEFSTRUCT now does not clobber old structure
1593 accessors that are related by inheritance, as specified in the
1594 :CONC-NAME section of the specification of DEFSTRUCT. (thanks to
1595 Valtteri Vuorikoski)
1596 * The compiler is now able to inline functions that were defined in
1597 a complex lexical environment (e.g. inside a MACROLET).
1598 * fixed bug in DESCRIBE, which now works on rank-0 arrays. (thanks
1600 * Support for the upcoming FreeBSD-5.0 release has been included.
1601 (thanks to Dag-Erling Smorgrav)
1602 * fixed bug 219: DEFINE-COMPILER-MACRO no longer has compile-time
1603 effect when it is not in a toplevel context.
1604 * fixed bug 222: DEFMETHOD and SYMBOL-MACROLET interactions now
1605 stand a better chance of being correct. (thanks to Gerd
1607 * fixed bug in COERCE, which now signals an error on coercing a
1608 rational to a bounded real type which excludes the expected
1610 * The compiler is now able to derive types more accurately from the
1611 COERCE and COMPILE functions.
1612 * fixed bug 223: functional binding is considered to be constant
1613 only for symbols in the CL package.
1614 * fixed bug 231: SETQ did not check the type of a variable being set
1615 (reported by Robert E. Brown)
1616 * A new optimization for MAKE-INSTANCE has been included, fixing
1617 various bugs (including relating to :ALLOCATION :CLASS slots and
1618 :DEFAULT-INITARGS over-eager evalueation). (thanks to Gerd
1620 * fixed some LOOP bugs revealed by Paul Dietz' test suite:
1621 ** As required by ANSI, LOOP now disallows anonymous collection
1622 clauses such as COLLECT I in conjunction with aggregate boolean
1623 clauses such as THEREIS (= I 1);
1624 ** LOOP now signals an error when any variable is reused in the
1625 same loop (including the potentially useful construct analogous
1626 to WITH A = 1 WITH A = (1+ A);
1627 ** IT is only a special loop symbol within the first clause of a
1628 conditional loop clause;
1629 ** LOOP with a typed iteration variable over a hashtable now
1630 signals a type error iff it should.
1631 * fixed some other bugs revealed by Paul Dietz' test suite:
1632 ** FILE-STREAM now names the class previously known as FD-STREAM;
1633 ** in DEFSTRUCT, a bare :CONC-NAME (or a :CONC-NAME with no
1634 argument) no longer signals an error;
1635 ** likewise in DEFSTRUCT, :CONC-NAME NIL now respects the package
1636 of the slot symbol, rather than using the current package
1637 ((:CONC-NAME "") continues to intern the slot's name in the
1639 * incremented fasl file version number, because of the incompatible
1640 change to the DEFSTRUCT-DESCRIPTION structure, and again because
1641 of the new implementation of DEFINE-COMPILER-MACRO.
1643 changes in sbcl-0.7.10 relative to sbcl-0.7.9:
1644 * Support for building SBCL for MIPS platforms running in
1645 little-endian mode has now been checked in, and basic
1646 functionality on said platforms verified.
1647 * minor incompatible change: PCL now records the pathname of a file
1648 in which methods and the like are defined, rather than its
1650 * minor incompatible change: TRUENAME now considers the truename of
1651 a file naming a directory to be the pathname with :DIRECTORY
1652 component indicating that directory.
1653 * minor incompatible change: a NAMED clause in the extended form of
1654 LOOP no longer causes a BLOCK named NIL to surround the LOOP. The
1655 reason for the previous behaviour is unclear.
1656 * more systematization and improvement of CLOS and MOP conformance
1657 in PCL (thanks to Gerd Moellman and Pierre Mai):
1658 ** the standard ANSI CL generic function NO-NEXT-METHOD is now
1660 ** DEFINE-METHOD-COMBINATION no longer signals an error for
1661 primary methods with no specializers;
1662 ** the MOP generic function GENERIC-FUNCTION-DECLARATIONS is now
1664 ** the Readers for Class Metaobjects methods CLASS-DIRECT-SLOTS
1665 and CLASS-DIRECT-DEFAULT-INITARGS have been implemented for
1666 FORWARD-REFERENCED-CLASSes; error reporting on
1667 CLASS-DEFAULT-INITARGS, CLASS-PRECEDENCE-LIST and CLASS-SLOTS
1669 ** SXHASH on CLOS instances now uses a slot internal to the
1670 instance to return different numbers on distinct instances,
1671 while preserving the same return value through invocations of
1673 ** DEFMETHOD signals errors when methods with longer incongruent
1674 lambda lists are added to generic functions;
1675 ** COMPUTE-CLASS-PRECEDENCE-LIST now has a method specialized on
1676 CLASS, as specified in AMOP;
1677 ** COMPUTE-SLOTS :AROUND now assigns locations sequentially based
1678 on the order returned by the primary method for classes of
1679 class STANDARD-CLASS;
1680 ** DEFINE-METHOD-COMBINATION now works with the :ARGUMENTS option.
1681 * fixed some bugs shown by Paul Dietz' test suite:
1682 ** DOLIST puts its body in TAGBODY;
1683 ** SET-EXCLUSIVE-OR sends arguments to :TEST function in the
1685 ** MULTIPLE-VALUE-SETQ evaluates side-effectful places before
1686 value producing form;
1687 ** if more variables are given to PROGV than values, extra
1688 variables are bound and made to have no value;
1689 ** NSUBSTITUTE on list arguments gets the right answer with
1691 ** ELT signals an error of type TYPE-ERROR when the index argument
1692 is not a valid sequence index;
1693 ** LOOP signals (at macroexpansion time) an error of type
1694 PROGRAM-ERROR when duplicate variable names are found;
1695 ** LOOP supports DOWNTO and ABOVE properly; (thanks to Matthew Danish)
1696 ** FUNCALL of special-operators now cause an error of type
1698 ** PSETQ now works as required in the presence of side-effecting
1699 symbol-macro places;
1700 ** NCONC accepts any object as its last argument;
1701 ** :COUNT argument to sequence functions may be BIGNUM; (thanks to
1703 ** loop-for-as-package does not require a package to be explicitely
1705 ** LOOP WITH now treats NIL in the d-var-spec correctly as an
1707 * fixed bug 166: compiler preserves "there is a way to go"
1708 invariant when deleting code.
1709 * fixed bug 172: macro lambda lists with required arguments after
1710 &REST arguments now cause an error to be signalled. (thanks to
1712 * fixed Entomotomy PEEK-CHAR-WRONGLY-ECHOS-TO-ECHO-STREAM
1713 bug. (thanks to Matthew Danish)
1714 * fixed bug 225: STRING-STREAM is now a class. (reported by Gilbert
1716 * fixed bug 136: CALL-NEXT-METHOD no longer gets confused when
1717 arguments are lexically rebound. (thanks to Gerd Moellmann and
1719 * fixed bug 194: error messages are now more informative when there
1720 is no primary method applicable in a call to a generic
1721 function. (thanks to Gerd Moellmann)
1722 * fixed bug in command line argument checking (thanks to Julian
1724 * fixed bug in COUNT-IF, making it handle :FROM-END correctly
1725 (thanks to Matthew Danish)
1726 * incremented fasl file version number, because of the
1727 SXHASH-related changes in the layout of CLOS data structures
1729 changes in sbcl-0.7.9 relative to sbcl-0.7.8:
1730 * minor incompatible change: The runtime (the Unix executable named
1731 "sbcl") is now much pickier about the .core files it will load.
1732 Essentially it now requires .core files to descend from the same
1733 build (not just the same sources or LISP-IMPLEMENTATION-VERSION)
1734 as the runtime does. (The intent is to prevent the crashes which
1735 can occur, and which can even be reported as mysterious failures,
1736 when people patch the sources or change the build parameters
1737 without changing LISP-IMPLEMENTATION-VERSION, then mix and match
1738 sbcl and .core files.)
1739 * fixed bug: VALUES-LIST is no longer optimized away.
1740 * fixed bug 142: The FFI conversion of C string values to Lisp
1741 string values no longer conses excessively. (thanks to Nathan
1742 Froyd porting Raymond Toy's fix to CMU CL)
1743 * began to systematize and improve MOP conformance in PCL (thanks to
1744 Nathan Froyd, Gerd Moellman and Pierre Mai):
1745 ** SLOT-DEFINITION-ALLOCATION now returns :CLASS, not the class
1747 ** GENERIC-FUNCTION-ARGUMENT-PRECEDENCE-ORDER is now implemented;
1748 ** FINALIZE-INHERITANCE is now called on class finalization;
1749 ** DOCUMENTATION and (SETF DOCUMENTATION) now have the correct
1750 argument precedence order.
1751 * fixed bug 202: The compiler no longer fails on functions whose
1752 derived types contradict their declared type.
1753 * DEFMACRO is implemented via EVAL-WHEN instead of IR1 translation,
1754 so it can be non-toplevel.
1755 * The fasl file version number has changed (because of the new
1756 implementation of DEFMACRO).
1757 * (mostly) fixed bugs 46b and 46c: sequence functions now check, in
1758 safe code, that any length requirement by their type-specifier
1759 argument is valid. The exceptions to this are described in bug
1761 * fixed bugs 46h and 46i: TWO-WAY- and CONCATENATED-STREAM creation
1762 functions now check the types of their inputs as required by ANSI.
1763 * fixed bug 48c: SYMBOL-MACROLET signals PROGRAM-ERROR when an
1764 introduced symbol is DECLAREd to be SPECIAL.
1765 * fixed reading of (COMPLEX DOUBLE-FLOAT) literals from fasl files
1766 * fixed bug: :COUNT argument to sequence functions may be negative
1767 * fixed bug: body of DO-SYMBOLS may contain declarations
1768 * fixed bug: PUSHNEW now evaluates its arguments from left to right
1769 (reported by Paul F. Dietz, fixed by Gerd Moellman)
1770 * fixed bug: PUSH, PUSHNEW and POP now evaluate a place given by a
1771 symbol macro only once
1772 * fixed printing of call frame when argument list is unavailable
1773 * fixed bug: :ALLOW-OTHER-KEYS is an allowed keyword name
1774 * compiler no longer signals WARNING on unknown keyword
1777 changes in sbcl-0.7.8 relative to sbcl-0.7.7:
1778 * A beta-quality port to the mips architecture running Linux,
1779 based on the old CMUCL backend, has been made. It has been tested
1780 on a big-endian kernel, and works sufficiently well to be able to
1781 rebuild itself; it has not been tested in little-endian mode.
1782 * fixed an inconsistency between gencgc.c and purify.c which made
1783 dumping/loading .core files unreliable
1784 * fixed bug 120a: The compiler now deals correctly with IFs where
1785 the consequent is the same as the alternative, instead of
1786 misderiving the return type. (thanks to Alexey Dejneka)
1787 * fixed bug 113: Logical pathnames are now dumpable (the logical
1788 host is resolved at load-time, throwing an error if it is not
1790 * fixed bug 174: FORMAT's error message is slightly clearer when a
1791 non-printing character is used in a format directive.
1792 * fixed several bugs in compiler checking of type declarations, i.e.
1793 violations of the Python "declarations are assertions" principle
1794 (thanks to Alexey Dejneka)
1795 * fixed several bugs in PCL's error checking (thanks to Gerd
1797 * fixed bug: printing of FILE-ERROR (thanks to Antonio
1799 * fixed bug in compilation of functions as first class values
1800 (thanks to Antonio Martinez-Shotton)
1801 * The compiler's handling TYPE-ERRORs which it can prove will
1802 inevitably happen at runtime has been cleaned up and corrected
1803 in several ways. (thanks to Alexey Dejneka)
1804 * improved argument type checking for various basic arithmetic
1805 operations (MAX, +, LOGXOR, etc.) which have had so much TLC
1806 lavished on them in the past that they can be compiled in many
1807 ways in different special cases
1808 * fixed bug 181: compiler checks validity of user supplied type
1810 * cleaned up code flushing in optimization: Function calls which
1811 should signal errors for safety purposes (e.g. which ANSI says
1812 should signal errors when their arguments are of incorrect type)
1813 are no longer optimized away.
1814 * added new extension: SB-DEBUG:BACKTRACE-AS-LIST
1815 * incremented fasl file version number, because changes in the
1816 implementation of sequence functions like COERCE caused
1817 internal utility functions like COERCE-TO-SIMPLE-VECTOR (used
1818 in old inline expansions) to become undefined. (Actually these
1819 changes were later undone, so we might very well be binary
1820 compatible with 0.7.7 after all, but leaving the version number
1821 incremented seemed like the simplest and most conservative
1824 changes in sbcl-0.7.7 relative to sbcl-0.7.6:
1825 * An alpha-quality port to the parisc architecture running Linux,
1826 based on the old CMUCL backend, has been made. This, even more so
1827 than the other backends, should be considered still a work in
1828 progress; known problems include that the Linux kernel in 64-bit
1829 mode does not propagate the correct sigcontext structure to
1830 userspace, and consequently SBCL on a parisc64 kernel will not
1832 * fixed bug 189: The compiler now respects NOTINLINE declarations for
1833 functions declared in FLET and LABELS. (I.e. "LET conversion" is
1834 suppressed.) Also now that the compiler is looking at declarations
1835 in the environment, it checks optimization declarations as well,
1836 and suppresses inlining when (> DEBUG SPEED).
1837 * More fixes have been made to treatment of floating point exception
1838 treatment and other Unix signals. In particular, floating point
1839 exceptions no longer cause Bus errors on the SPARC/Linux platform.
1840 * The detection and handling of control stack exhaustion (infinite
1841 or very deeply nested recursion) has changed. Stack exhaustion
1842 detection is now done by write-protecting pages at the OS level
1843 and applies at all optimization settings; when found, a
1844 SB-KERNEL:CONTROL-STACK-EXHAUSTED condition (subclass of
1845 STORAGE-CONDITION) is signalled, so stack exhaustion can no longer
1846 be caught using IGNORE-ERRORS.
1847 * Bugs 65, 70, and 109 fixed: The compiler now preserves invariants
1848 correctly when transforming recursive LABELS functions to LETs.
1849 (thanks to Alexey Dejneka)
1850 * Bug 48a./b. fixed: SYMBOL-MACROLET now refuses to bind symbols
1851 that are names of constants or global variables.
1852 * Bug fix: DEFINE-ALIEN-ROUTINE now declaims the correct FTYPE for
1853 alien routines with docstrings.
1854 * Bug 184 fixed: Division of ratios by the integer 0 now signals an
1855 error of type DIVISION-BY-ZERO. (thanks to Wolfhard Buss and
1857 * Bug fix: Errors in PARSE-INTEGER are now of type PARSE-ERROR.
1858 (thanks to Eric Marsden)
1859 * Bug fix: COERCE to (COMPLEX FLOAT) of rationals now returns an
1860 object of type (COMPLEX FLOAT). (thanks to Wolfhard Buss)
1861 * Bug fix: The SPARC backend can now compile functions involving
1862 LOGAND and stack-allocated arguments. (thanks to Raymond Toy)
1863 * Bug fix: We no longer segfault on passing a non-FILE-STREAM stream
1864 to a functions expecting a PATHNAME-DESIGNATOR.
1865 * Bug fix: DEFGENERIC now enforces the ANSI restrictions on its
1866 lambda lists. (thanks to Alexey Dejneka)
1867 * Bug fix: changed encoding of PCL's internal MAKE-INSTANCE
1868 functions so that EXPORTing the name of the class doesn't cause
1869 MAKE-INSTANCE functions from earlier DEFCLASSes to get lost (thanks
1870 to Antonio Martinez for reporting this)
1871 * Bug 192 fixed: The internal primitive DATA-VECTOR-REF can now be
1872 constant-folded without failing an assertion. (thanks to Einar
1873 Floystad Dorum for reporting this)
1874 * Bugs 123 and 165 fixed: array specializations on as-yet-undefined
1875 types are now dealt with more correctly by the compiler.
1876 * Minor incompatible change: COMPILE-FILE-PATHNAME now merges its
1877 OUTPUT-FILE argument with its INPUT-FILE argument, resulting in
1878 behaviour analogous to RENAME-FILE. This puts its behaviour more
1879 in line with ANSI's wording on COMPILE-FILE-PATHNAME. (thanks to
1881 * The fasl file version number has changed again. (because of the
1882 bug fix involving the names of PCL MAKE-INSTANCE functions)
1884 changes in sbcl-0.7.6 relative to sbcl-0.7.5:
1885 * bug fix: Floating point exceptions are treated much more
1886 consistently on the x86/Linux and PPC/Linux platforms.
1887 * Array initialization with :INITIAL-ELEMENT is now much faster for
1888 cases when the compiler cannot open code the array creation, but
1889 does know what the UPGRADED-ARRAY-ELEMENT-TYPE will be. General
1890 array accesses have also seen a speed increase.
1891 * bug fix: LOAD :IF-DOES-NOT-EXIST NIL now works when file type is
1892 specified. (This was at the root of some bad interactions between
1893 SBCL and ILISP: thanks to Gregory Wright for diagnosing this and
1895 * bug fix: Internal error arguments for undefined functions are now
1896 computed correctly on the PPC/Linux platform.
1897 * bug fix: Bad &REST syntax is now checked correctly. (thanks to
1898 Raymond Toy's patch for CMU CL)
1899 * Support for the Solaris 9 operating environment has been included
1900 (thanks to Daniel Merritt)
1901 * A very ugly but hopefully complete draft of the missing FFI chapter
1902 of the manual has been created by reformatting the corresponding
1903 CMU CL manual chapter into (currently very ugly and incoherent)
1904 DocBook and bringing it up to date for SBCL behavior. Thus, the
1905 manual is now essentially complete, at least by my extreme
1906 once-and-only-once standards, whereby it's acceptable to refer to
1907 the doc strings of SB-EXT functions as the primary documentation.
1908 * The fasl file version number has changed again, due to cleanup of
1909 (user-invisible) bitrotted stuff. (E.g. *!INITIAL-FDEFN-OBJECTS*
1910 is no longer a static symbol.)
1912 changes in sbcl-0.7.5 relative to sbcl-0.7.4:
1913 * SBCL now builds with OpenMCL (version 0.12) as the
1914 cross-compilation host; also, more progress has been made toward
1915 bootstrapping under CLISP.
1916 * SBCL now runs on the Tru64 (aka OSF/1) operating system on the
1918 * bug 158 fixed: The compiler can now deal with integer loop
1919 increments different from 1; fixing this turned out also to fix
1921 * bug 169 fixed: no more bogus warnings about using lexical bindings
1922 despite the presence of perfectly good SPECIAL declarations (thanks
1923 to David Lichteblau)
1924 * bug 175 fixed: CHANGE-CLASS is now more ANSI-conforming,
1925 accepting initargs. (thanks to Espen Johnsen and Pierre Mai)
1926 * bug 179 fixed: DIRECTORY can now deal with filenames with pattern
1928 * bug 180 fixed: Method combination specifications no longer ignore
1929 the :MOST-SPECIFIC-LAST option. (thanks to Pierre Mai)
1930 * bug fix: Structure type predicate functions now check their argument
1931 count as they should.
1932 * bug fix: Classes with :METACLASS STRUCTURE-CLASS now print
1933 correctly. (thanks to Pierre Mai)
1934 * minor incompatible change: The --noprogrammer option is deprecated
1935 in favor of the new --disable-debugger option, which is very similar.
1936 (The major difference is that it takes effect at a slightly different
1937 time at startup, causing handling of errors in --sysinit and
1938 --userinit files will be affected differently.) The
1939 SB-EXT:DISABLE-DEBUGGER and SB-EXT:ENABLE-DEBUGGER functions have
1940 been added to allow this functionality to be controlled from ordinary
1941 Lisp code. (ENABLE-DEBUGGER should help people like the Debian
1942 maintainers, who might want to run non-interactive scripts to
1943 build SBCL cores which will later be used interactively.)
1944 * minor incompatible change: The LOAD function no longer, when given
1945 a wild pathname to load, loads all files matching that pathname.
1946 Instead, an error of type FILE-ERROR is signalled.
1948 changes in sbcl-0.7.4 relative to sbcl-0.7.3:
1949 * bug 147 fixed: The compiler preserves its block link/count
1950 invariants more correctly now so that it doesn't crash. (thanks
1952 * Dynamic loading of object files in OpenBSD is now supported. (thanks
1954 * COMPILE now works correctly on macros. (thanks to Matthias Hoelzl)
1955 * GET-MACRO-CHARACTER and SET-MACRO-CHARACTER now represent
1956 no-value-for-this-character as NIL (as specified by ANSI).
1957 * HOST-NAMESTRING on physical pathnames now returns a string that is
1958 valid as a host argument to MERGE-PATHNAMES and to MAKE-PATHNAME.
1959 (thanks to Christophe Rhodes)
1960 * The Alpha port handles icache flushing more correctly. (thanks to
1962 * More progress has been made toward bootstrapping under CLISP. (thanks
1963 to Christophe Rhodes)
1964 * The fasl file format has changed again, because dynamic loading
1965 on OpenBSD (which has non-ELF object files) motivated some cleanups
1966 in the way that foreign symbols are transformed and passed around.
1967 * minor incompatible change: The ASCII RUBOUT character, (CHAR-CODE 127),
1968 is no longer treated as whitespace by the reader, but instead as
1969 an ordinary character. Thus e.g. (READ-FROM-STRING "A
\7fB") returns
1970 |A
\7fB|, instead of A as it used to.
1972 changes in sbcl-0.7.3 relative to sbcl-0.7.2:
1973 * ANSI's DEFINE-SYMBOL-MACRO is now supported. (thanks to Nathan
1974 Froyd porting CMU CL code originally by Douglas Thomas Crosher)
1975 * SBCL now runs on the PPC archtiecture under Linux. It actually did
1976 this as of 0.7.1.45, but was left out of the previous news section
1977 (thanks to Dan Barlow)
1978 * SBCL now runs on the Solaris operating system on SPARC architectures
1979 (thanks to Christophe Rhodes's port of the CMUCL runtime)
1980 * cleanups to the runtime on SPARC, both Linux and Solaris, and for
1981 gcc>=3 (thanks to Nathan Froyd and Ingvar Mattsson)
1982 * SPARC backend cleanups, allowing builds of cores optimized for V8
1983 and V9 SPARCS, and also emission of code targeted to a particular
1984 backend chosen at runtime (thanks to Christophe Rhodes and Raymond
1986 * SBCL is closer to bootstrapping under CLISP, thanks to various
1987 fixes by Christophe Rhodes.
1988 * The fasl file format has changed again, to allow the compiler's
1989 INFO database to support symbol macros.
1990 * The user manual (in doc/) is formatted into HTML more nicely.
1991 (thanks to coreythomas)
1992 * The system is smarter about SUBTYPEP relationships, especially
1993 those involving NOT types (including types such as ATOM which are
1994 represented internally using NOT types). Thus SUBTYPEP is less
1995 likely to return (VALUES NIL NIL) in general, and in particular
1996 bugs 58 and (the remaining bits of) bug 50 are fixed. (thanks to
1998 * The fasl file format has changed again, because the internal
1999 representation of types now includes a new slot to support the new
2000 SUBTYPEP-of-NOT-types logic.
2001 * (not a change in the main branch of SBCL, but a related prototype
2002 which can hopefully be merged into the main branch of SBCL in the
2003 future:) Brian Spilsbury has produced a Unicode-enabled variant of
2004 sbcl-0.7.0, available as a patch against sbcl-0.7.0 at
2005 <http://designix.com.au/brian/SBCL/sbcl-0.7.0-unicode.p0.gz>.
2006 * Bug 151 fixed: GET-DISPATCH-MACRO-CHAR now returns NIL for undefined
2007 dispatch macro character combinations. (thanks to Alexey Dejneka)
2008 * Bugfix in PARSE-NAMESTRING: we now correctly parse unix namestrings
2009 that superficially look like logical namestrings correctly.
2010 * USER-HOMEDIR-PATHNAME now returns a (physical) pathname that SBCL
2012 * Bugfix in DEFSTRUCT: BOA constructor lambda lists now accept (name
2013 default supplied-p) for &optional and &key arguments. (thanks to
2016 changes in sbcl-0.7.2 relative to sbcl-0.7.1:
2017 * incompatible change: The compiler is now less aggressive about
2018 tail call optimization, doing it only when (> SPACE DEBUG) or
2019 (> SPEED DEBUG). (This is an incompatible change because there are
2020 programs which relied on the old CMU-CL-style behavior to optimize
2021 away their unbounded recursion which will now die of stack overflow.)
2022 * minor incompatible change: The default BYTES-CONSED-BETWEEN-GCS
2023 for non-GENCGC systems has been increased to 20M (since that
2024 seems much closer to the likely performance optimum for modern
2025 systems than the old 4M value was)
2026 * minor incompatible change: new larger values for *DEBUG-PRINT-LENGTH*
2027 and *DEBUG-PRINT-LEVEL*
2028 * SBCL runs on SPARC systems now. (thanks to Christophe Rhodes' port
2029 of CMU CL's support for SPARC, and various endianness and other
2030 SBCL portability fixes due to Christophe Rhodes and Dan Barlow)
2031 * new syntactic sugar for the Unix command line: --load foo.bar is now
2032 an alternate notation for --eval '(load "foo.bar")'.
2034 ** The system now detects stack overflow and handles it gracefully,
2035 at least for (OR (> SAFETY (MAX SPEED SPACE)) (= SAFETY 3))
2036 optimization settings. (This is a good thing in general, and
2037 its introduction in this version should be particularly timely
2038 for anyone whose code fails because of suppression of tail
2040 ** The system now hunts for the C variable "environ" in a more
2041 devious way, to avoid segfaults when the C library version differs
2042 between compile time and run time. (thanks to Christophe Rhodes)
2043 ** INTEGER-valued CATCH tags now work. (thanks to Alexey Dejneka,
2044 and also to Christophe Rhodes for porting the fix to non-X86 CPUs)
2045 ** The compiler no longer issues bogus style warnings for undefined
2046 classes in the same source file as the DEFCLASSes which defined
2047 them. (thanks to Stig E Sandoe for reporting and Martin Atzmueller
2049 ** fixes in CONDITION class precedence list for undefined function
2050 errors (thanks to Alexei Dejneka)
2051 ** *DEFAULT-PATHNAME-DEFAULTS* is used more consistently and
2052 correctly. (thanks to Dan Barlow)
2053 ** portability fixes aiming at bootstrapping under CLISP (thanks
2054 to Dave McDonald and Christophe Rhodes)
2055 ** FORMAT fixes (thanks to Robert Strandh and Dan Barlow)
2056 ** fixes in type translation and and type inference (thanks to
2058 ** fixes to optimizer internal errors (thanks to Alexei Dejneka)
2059 ** various fixes in the new ports (thanks to Dan Barlow)
2060 * several changes related to debugging:
2061 ** suppression of tail recursion, as noted above
2062 ** stack overflow detection, as noted above
2063 ** The default implementation of TRACE has changed. :ENCAPSULATE T
2064 is now the default. (For some time encapsulation has been more
2065 reliable than the breakpoint-based :ENCAPSULATE NIL
2066 implementation, at least on X86 systems; and I just noticed that
2067 encapsulation also seems closer to the spirit of the ANSI
2070 changes in sbcl-0.7.1 relative to sbcl-0.7.0:
2072 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are set
2073 up properly again. (There was a packaging bug in 0.7.0 which
2074 left their definitions in SB-SYS::LOAD-FOREIGN and
2075 SB-SYS::LOAD-1-FOREIGN. LOAD-FOREIGN and LOAD-1-FOREIGN are
2076 vital for most things which interface to C-level interfaces,
2077 like extensions working with sockets or databases or
2078 Perl-compatible regexes or whatever, and the need to fix
2079 this bug is the main reason that 0.7.1 was released so
2081 ** DEFGENERIC is now choosier about the methods it redefines, so that
2082 reLOADing a previously-LOADed file containing DEFGENERICs does
2083 the right thing now. Thus, the Lispy edit/reLOAD-a-little/test
2084 cycle now works as it should. (thanks to Alexey Dejneka)
2085 ** Bug 106 (types (COMPLEX FOO) where FOO is an obscure type) was
2086 fixed by Christophe Rhodes. (He actually submitted this patch
2087 months ago, and I delayed until after 0.7.0.)
2088 ** Bug 111 (internal compiler confusion about runtime checks on
2089 FUNCTION types) was fixed by Alexey Dejneka.
2090 * Some internal cleanups (getting rid of variables which aren't
2091 needed now that the byte interpreter is gone) caused the fasl
2092 file format number to change again.
2094 changes in sbcl-0.7.0 relative to sbcl-0.6.13:
2095 * major incompatible change: The default fasl file extension, i.e. the
2096 default extension for files produced by COMPILE-FILE, has changed
2097 to ".fasl", for all architectures. (No longer ".x86f" and ".axpf".)
2099 ** There are many changes in the implementation of the compiler.
2100 SBCL is now essentially a compiler-only implementation of ANSI
2101 Common Lisp. EVAL still "interprets" a few special cases, but
2102 almost all the interesting cases are handled by creating
2103 a LAMBDA expression, calling COMPILE on it, then calling
2104 FUNCALL on the result.
2105 ** The EVAL-WHEN code has been rewritten to be ANSI-compliant, and
2106 various related bugs (IR1-1, IR1-2, IR1-3, IR1-3a) have gone away.
2107 Since the code is newer, there might still be some new bugs
2108 (though not as many as before Martin Atzmueller's fixes:-). But
2109 the new code is substantially simpler and clearer, and hopefully
2110 any remaining bugs will be simpler, less fundamental, and more
2111 fixable then the bugs in the old code.
2112 ** The revised compiler is still a little unsteady on its feet.
2114 *** The debugging information it produces (particularly the names
2115 of FUNCTION objects) is sometimes much less useful than what
2116 the old compiler produced.
2117 *** The support for inlining FOO when you (DECLAIM (INLINE FOO))
2118 then do (DEFUN FOO ..) in a non-null lexical environment (e.g.
2119 within a MACROLET) has been temporarily weakened.
2120 ** There are new compiler optimizations for various functions:
2121 *** the sequence functions FIND, POSITION, FIND-IF, POSITION-IF,
2122 FIND-IF-NOT, POSITION-IF-NOT, and FILL
2123 *** the math functions TRUNCATE, FLOOR, and CEILING
2124 *** the function-of-all-trades COERCE
2125 Mostly these should be transparent, but there's one
2126 potentially-annoying problem (bug 117): when the compiler
2127 inline-expands a function and does type analysis on the result,
2128 it can create control paths which have type mismatches, and
2129 when it can't prove that those control paths aren't taken,
2130 it will issue WARNINGs about the type mismatches. This is
2131 a particular problem in practice for the new sequence functions.
2132 It's not clear how this should be fixed, and for now, a
2133 workaround is given in the entry for 117 in the BUGS file.
2134 ** (Because of the interaction between the two previous items --
2135 occasional inlining problems and new inline expansions -- some
2136 of the new sequence function optimizations won't really kick in
2137 completely until debugging information, and then inlining, are
2138 straightened out in some future version.)
2139 * minor incompatible changes:
2140 ** As part of a bug fix by Christophe Rhodes to DIRECTORY behavior,
2141 DIRECTORY no longer implicitly promotes NIL slots of its
2142 pathname argument to :WILD. In particular, when you ask for the
2143 contents of a directory (which you used to be able to do without
2144 explicit wildcards, e.g. (DIRECTORY "/tmp/")) you now need to use
2145 explicit wildcards, e.g. (DIRECTORY "/tmp/*.*").
2146 ** changes in behavior that ANSI explicitly defines to be
2147 implementation dependent:
2148 *** The new compiler-only implementation still conforms with ANSI,
2149 but acts a little different than before. Besides the obvious
2150 changes in performance tradeoffs (that the cost per form passed
2151 to EVAL has gone up, and the cost per form executed by EVAL
2152 has gone down), the behavior of the system changes a little
2153 because there are no longer any interpreted function objects.
2154 COMPILED-FUNCTION-P is now synonymous with FUNCTIONP, and
2155 e.g. doing COMPILE on the output of interactive DEFUN is
2157 *** The value of INTERNAL-TIME-UNITS-PER-SECOND has been increased
2159 *** The default for the USE list in MAKE-PACKAGE and DEFPACKAGE
2160 has changed from (:CL) to NIL.
2161 *** The CHAR-NAME of unprintable ASCII characters which, unlike
2162 e.g. #\Newline and #\Tab, don't have names specified in the
2163 ANSI Common Lisp standard, is now based on their ASCII symbolic
2164 names (#\Nul, #\Soh, #\Stx, etc.) The old CMU-CL-style names
2165 (#\Null, #\^a, #\^b, etc.) are still accepted by NAME-CHAR, but
2166 are no longer used for output.
2167 ** changes in internal implementation constants:
2168 *** The default value of *BYTES-CONSED-BETWEEN-GCS* has doubled, to
2169 4 million. (If your application spends a lot of time GCing and
2170 you have a lot of RAM, you might want to experiment with
2171 increasing it even more.)
2172 ** The SB-C-CALL package has been merged into the SB-ALIEN package.
2173 However, almost all old code should still continue to work without
2174 immediate update, as SB-C-CALL is now a (deprecated) nickname
2176 ** Old operator names in the style DEF-FOO are now deprecated in
2177 favor of new corresponding names DEFINE-FOO, for consistency with
2178 the naming convention used in the ANSI standard (DEFSTRUCT, DEFVAR,
2179 DEFINE-CONDITION, DEFINE-MODIFY-MACRO..). This mostly affects
2180 internal symbols, but a few supported extensions like
2181 SB-ALIEN:DEF-ALIEN-FUNCTION are also affected. (So e.g.
2182 DEF-ALIEN-FUNCTION becomes DEFINE-ALIEN-FUNCTION.)
2183 ** The debugger prompt sequence now goes "5]", "5[2]", "5[3]",
2184 etc. as you get deeper into recursive calls to the debugger
2185 command loop, instead of the old "5]", "5]]", "5]]]"
2186 sequence. (I was motivated to do this when squabbles between
2187 ILISP and SBCL left me very deeply nested in the debugger. In the
2188 short term, this change will probably provoke more ILISP/SBCL
2189 squabbles, but hopefully it will be an improvement in the long run.)
2190 ** SB-ALIEN:DEFINE-ALIEN-FUNCTION (also known by the old deprecated
2191 name DEF-ALIEN-FUNCTION) now does DECLAIM FTYPE for the defined
2192 function, since declaiming return types involving aliens is
2193 (1) annoyingly messy to do by hand and (2) vital to efficient
2194 compilation of code which calls such functions.
2195 ** SB-ALIEN:LOAD-FOREIGN and SB-ALIEN:LOAD-1-FOREIGN are no
2196 longer reexported by the SB-EXT package. They're solely useful
2197 for alien code, so it seems more logical that you should get
2198 them from the SB-ALIEN package, not in SB-EXT.
2199 ** :SB-CONSTRAIN-FLOAT-TYPE, :SB-PROPAGATE-FLOAT-TYPE, and
2200 :SB-PROPAGATE-FUN-TYPE are no longer considered to be optional
2201 features. Instead, the code that they used to control is always
2202 built into the system.
2203 * many other bug fixes
2204 ** DEFSTRUCT and DEFCLASS have been substantially updated to take
2205 advantage of the new EVAL-WHEN stuff and to clean them up in
2206 general, and they are now more ANSI-compliant in a number of
2207 ways. Martin Atzmueller is responsible for a lot of this.
2208 ** Besides the cleanups discussed above, Martin Atzmueller fixed
2210 *** fixes in READ-SEQUENCE and WRITE-SEQUENCE
2211 *** correct ERROR type for various file operations
2212 *** some fixes for Lisp streams
2213 *** DEFMETHOD syntax checking
2214 *** changing old weird representation of debug information as
2215 strings (which, among their other deficiencies, don't transform
2216 correctly when you rename packages, and don't change their
2217 print representation when you change things like *PACKAGE*
2218 and *PRINT-LENGTH*) to symbols and lists of symbols
2219 He also made several improvements and fixed several bugs in DESCRIBE.
2220 ** Alexey Dejneka fixed many bugs, including classic bugs and bugs he
2222 *** misbehavior of WRITE-STRING/WRITE-LINE
2223 *** LOOP over keys of a hash table, LOOP bugs 49b and 81 and 103,
2224 and several other LOOP problems as well
2225 *** DIRECTORY when similar filenames are present
2226 *** DEFGENERIC with :METHOD options
2227 *** bug 126, in (MAKE-STRING N :INITIAL-ELEMENT #\SPACE))
2228 *** bug in the optimization of ARRAY-ELEMENT-TYPE
2229 *** argument ordering in FIND with :TEST option
2230 *** mishandled package designator argument in APROPOS-LIST
2231 *** various problems in the backquote readmacro
2232 *** a bug in APROPOS
2233 *** probably some others that I'm not describing very well here,
2234 since the CVS log documents them by reference to sbcl-devel
2235 messages, and the SourceForge archives aren't working well.:-(
2236 ** Dan Barlow improved the Alpha port (and is making progress on the
2237 PPC port, for those of you who think different).
2238 ** Besides the DIRECTORY fixes and changes mentioned elsewhere,
2239 Christophe Rhodes cleaned up the system self-test scripts (in tests/*),
2240 contributed the optimization of FIND-IF-NOT and POSITION-IF-NOT, and
2241 continues to work on the SPARC port (for those of you in a position
2242 to look down upon our little PC-compatible boxes from a great height).
2243 ** PPRINT-LOGICAL-BLOCK now copies the *PRINT-LINES* value on entry
2244 and uses that copy, rather than the current dynamic value, when
2245 it's trying to decide whether to truncate output. Thus e.g.
2246 (let ((*print-lines* 50))
2247 (pprint-logical-block (stream nil)
2249 (let ((*print-lines* 8))
2250 (print (aref possiblybigthings i) stream)))))
2251 should now truncate the logical block only at 50 lines, instead of
2252 often truncating it at 8 lines, as it did before.
2253 * The doc/cmucl/ directory, containing old CMU CL documentation
2254 from the time of the fork, is no longer part of the base system.
2255 SourceForge has shut down its anonymous FTP service, and with it
2256 my original plan for distributing the old CMU CL documentation
2257 there. For now, if you need these files you can download an old
2258 SBCL source release and extract them from it.
2259 * The fasl file version number changed again, for dozens of reasons,
2260 some of which are apparent above.
2262 changes in sbcl-0.6.13 relative to sbcl-0.6.12:
2263 * a port to the Compaq/DEC Alpha CPU, thanks to Dan Barlow
2264 * Martin Atzmueller ported Tim Moore's marvellous CMU CL DISASSEMBLE
2265 patch, so that DISASSEMBLE output is much nicer.
2266 * The code in the SB-PROFILE package now seems reasonably stable.
2267 I still haven't decided what the final interface should look like
2268 (I'd like PROFILE to interact cleanly with TRACE, since both
2269 facilities use function encapsulation) but if you have a need
2270 for profiling now, you can probably use it successfully with
2271 the current CMU-CL-style interface.
2272 * Pathnames and *DEFAULT-DIRECTORY-DEFAULTS* are much more
2273 ANSI-compliant, thanks to various fixes and tests from Dan Barlow.
2274 Also, at Dan Barlow's suggestion, TRUENAME on a dangling symbolic
2275 link now returns the dangling link itself, and for similar
2276 reasons, TRUENAME on a cyclic symbolic link returns the cyclic
2277 link itself. (In these cases the old code signalled an error and
2278 looped endlessly, respectively.) Thus, DIRECTORY now works even
2279 in the presence of dangling and cyclic symbolic links.
2280 * Compiler trace output (the :TRACE-FILE option to COMPILE-FILE)
2281 is now a supported extension again, since the consensus on
2282 sbcl-devel was that it can be useful for ordinary development
2283 work, not just for debugging SBCL itself.
2284 * The default for SB-EXT:*DERIVE-FUNCTION-TYPES* has changed to
2285 NIL, i.e. ANSI behavior, i.e. the compiler now recognizes
2286 that currently-defined functions might be redefined later with
2287 different return types.
2288 * Hash tables can be printed readably, as inspired by CMU CL code
2289 of Eric Marsden and SBCL code of Martin Atzmueller.
2290 * better error handling in CLOS method combination, thanks to
2291 Martin Atzmueller porting Pierre Mai's CMU CL patches
2292 * more overflow fixes for >16Mbyte I/O buffers
2293 * A bug in READ has been fixed, so that now a single Ctrl-D
2294 character suffices to cause end-of-file on character streams.
2295 In particular, now you only need one Ctrl-D at the command
2296 line (not two) to exit SBCL.
2297 * fixed bug 26: ARRAY-DISPLACEMENT now returns (VALUES NIL 0) for
2299 * fixed bug 107 (reported as a CMU CL bug by Erik Naggum on
2300 comp.lang.lisp 2001-06-11): (WRITE #*101 :RADIX T :BASE 36) now
2301 does the right thing.
2302 * The implementation of some type tests, especially for CONDITION
2303 types, is now tidier and maybe faster, due to CMU CL code
2304 originally by Douglas Crosher, ported by Martin Atzmueller.
2305 * Some math functions have been fixed, and there are new
2306 optimizers for deriving the types of COERCE and ARRAY-ELEMENT-TYPE,
2307 thanks to Raymond Toy's work on CMU CL, ported by Martin Atzmueller.
2308 * (There are also some new optimizers in contrib/*-extras.lisp. Those
2309 aren't built into sbcl-0.6.13, but are a sneak preview of what's
2310 likely to be built into sbcl-0.7.0.)
2311 * A bug in COPY-READTABLE was fixed. (Joao Cachopo's patch to CMU
2312 CL, ported to SBCL by Martin Atzmueller)
2313 * DESCRIBE now gives more information in some cases. (Pierre Mai's
2314 patch to CMU CL, ported to SBCL by Martin Atzmueller)
2315 * Martin Atzmueller and Bill Newman fixed some bugs in INSPECT.
2316 * There's a new slam.sh hack to shorten the edit/compile/debug
2317 cycle for low-level changes to SBCL itself, and a new
2318 :SB-AFTER-XC-CORE target feature to control the generation of
2319 the after-xc.core file needed by slam.sh.
2320 * minor incompatible change: The ENTRY-POINTS &KEY argument to
2321 COMPILE-FILE is no longer supported, so that now every function
2322 gets an entry point, so that block compilation looks a little
2323 more like the plain vanilla ANSI section 3.2.2.3 scheme.
2324 * minor incompatible change: SB-EXT:GET-BYTES-CONSED now
2325 returns the number of bytes consed since the system started,
2326 rather than the number consed since the first time the function
2327 was called. (The new definition parallels ANSI functions like
2328 CL:GET-INTERNAL-RUN-TIME.)
2329 * minor incompatible change: The old CMU-CL-style DIRECTORY options,
2330 i.e. :ALL, :FOLLOW-LINKS, and :CHECK-FOR-SUBDIRS, are no longer
2331 supported. Now DIRECTORY always does the abstract Common-Lisp-y
2332 thing, i.e. :ALL T :FOLLOW-LINKS T :CHECK-FOR-SUBDIRS T.
2333 * Fasl file version numbers are now independent of the target CPU,
2334 since historically most system changes which required version
2335 number changes have affected all CPUs equally. Similarly,
2336 the byte fasl file version is now equal to the ordinary
2339 changes in sbcl-0.6.12 relative to sbcl-0.6.11:
2340 * incompatible change: The old SB-EXT:OPTIMIZE-INTERFACE declaration
2341 is no longer recognized. I apologize for this, because it was
2342 listed in SB-EXT as a supported extension, but I found that
2343 its existing behavior was poorly specified, as well as incorrectly
2344 specified, and it looked like too much of a mess to straighten it
2345 out. I have enough on my hands trying to get ANSI stuff to work..
2346 * many patches ported from CMU CL by Martin Atzmueller, with
2347 half a dozen bug fixes in pretty-printing and the debugger, and
2348 half a dozen others elsewhere
2349 * fixed bug 13: Floating point infinities are now supported again.
2350 They might still be a little bit flaky, but thanks to bug reports
2351 from Nathan Froyd and CMU CL patches from Raymond Toy they're not
2352 as flaky as they were.
2353 * The --noprogrammer command line option is now supported. (Its
2354 behavior is slightly different in detail from what the old man
2355 page claimed it would do, but it's still appropriate under the
2356 same circumstances that the man page talks about.)
2357 * The :SB-PROPAGATE-FLOAT-TYPE and :SB-PROPAGATE-FUN-TYPE features
2358 are now supported, and enabled by default. Thus, the compiler can
2359 handle many floating point and complex operations much less
2360 inefficiently. (Thus e.g. you can implement a complex FFT
2362 * The compiler now detects type mismatches between DECLAIM FTYPE
2363 and DEFUN better, and implements CHECK-TYPE more correctly, and
2364 SBCL builds under CMU CL again despite its non-ANSI EVAL-WHEN,
2365 thanks to patches from Martin Atzmueller.
2366 * various fixes to make the cross-compiler more portable to
2367 ANSI-conforming-but-different cross-compilation hosts (notably
2368 Lispworks for Windows, following bug reports from Arthur Lemmens)
2369 * A bug in READ-SEQUENCE for CONCATENATED-STREAM, and a gross
2370 ANSI noncompliance in DEFMACRO &KEY argument parsing, have been
2371 fixed thanks to Pierre Mai's CMU CL patches.
2372 * fixes to keep the system from overflowing internal counters when
2373 it tries to use i/o buffers larger than 16M bytes
2374 * fixed bug 45a: Various internal functions required to support
2375 complex special functions have been merged from CMU CL sources.
2376 (When I was first setting up SBCL, I misunderstood a compile-time
2377 conditional #-OLD-SPECFUN, and so accidentally deleted them.)
2378 * improved support for type intersection and union, fixing bug 12
2379 (e.g., now (SUBTYPEP 'KEYWORD 'SYMBOL)=>T,T) and some other
2380 more obscure bugs as well
2381 * some steps toward byte-compiling non-performance-critical
2382 parts of the system, courtesy of patches from Martin Atzmueller
2383 * Christophe Rhodes has made some debian packages of sbcl at
2384 <http://www-jcsu.jesus.cam.ac.uk/ftp/pub/debian/lisp>.
2385 From his sbcl-devel e-mail of 2001-04-08 they're not completely
2386 stable, but are nonetheless usable. When he's ready, I'd be happy
2387 to add them to the SourceForge "File Releases" section. (And if
2388 anyone wants to do RPMs or *BSD packages, they'd be welcome too.)
2389 * new fasl file format version number (because of changes in
2390 internal representation of (OR ..) types to accommodate the new
2391 support for (AND ..) types, among other things)
2393 changes in sbcl-0.6.11 relative to sbcl-0.6.10:
2394 * Martin Atzmueller pointed out that bugs #9 and #25 are gone in
2396 * bug 34 fixed by Martin Atzmueller: dumping/loading instances works
2398 * fixed bug 40: TYPEP, SUBTYPEP, UPGRADED-ARRAY-ELEMENT-TYPE,
2399 and UPGRADED-COMPLEX-PART-TYPE now work better with of compound
2400 types built from undefined types, e.g. '(VECTOR SOME-UNDEF-TYPE).
2401 * DESCRIBE now works on structure objects again.
2402 * Most function call argument type mismatches are now handled as
2403 STYLE-WARNINGs instead of full WARNINGs, since the compiler doesn't
2404 know whether the function will be redefined before the call is
2405 executed. (The compiler could flag local calls with full WARNINGs,
2406 as per the ANSI spec "3.2.2.3 Semantic Constraints", but right now
2407 it doesn't keep track of enough information to know whether calls
2408 are local in this sense.)
2409 * Compiler output is now more verbose, with messages truncated
2410 later than before. (There should be some supported way for users
2411 to override the default verbosity, but I haven't decided how to
2412 provide it yet, so this behavior is still controlled by the internal
2413 SB-C::*COMPILER-ERROR-PRINT-FOO* variables in
2414 src/compiler/ir1util.lisp.)
2415 * Fasl file format version numbers have increased again, because
2416 support for the Gray streams extension changes the layout of the
2417 system's STREAM objects.
2418 * The Gray subclassable streams extension now works, thanks to a
2419 patch from Martin Atzmueller.
2420 * The full LOAD-FOREIGN extension (not just the primitive
2421 LOAD-FOREIGN-1) now works, thanks to a patch from Martin Atzmueller.
2422 * The default behavior of RUN-PROGRAM has changed. Now, unlike CMU CL
2423 but like most other programs, it defaults to copying the Unix
2424 environment from the original process instead of starting the
2425 new process in an empty environment.
2426 * Extensions which manipulate the Unix environment now support
2427 an :ENVIRONMENT keyword option which doesn't smash case or
2428 do other bad things. The CMU-CL-style :ENV option is retained
2429 for porting convenience.
2430 * LOAD-FOREIGN (and LOAD-1-FOREIGN) now support logical pathnames,
2431 as per Daniel Barlow's suggestion and Martin Atzmueller's patch
2433 changes in sbcl-0.6.10 relative to sbcl-0.6.9:
2435 * A patch from Martin Atzmueller seems to have solved the SIGINT
2436 problem, and as far as we know, signal-handling now works cleanly.
2437 (If you find any new bugs, please report them!)
2438 * The system no longer defaults Lisp source file names to types
2439 ".l", ".cl", or ".lsp", but only to ".lisp".
2440 * The compiler no longer uses special default file extensions for
2441 byte-compiled code. (The ANSI definition of COMPILE-FILE-PATHNAME
2442 seems to expect a single default extension for all compiled code,
2443 and there's no compelling reason to try to stretch the standard
2444 to allow two different extensions.) Instead, byte-compiled files
2445 default to the same extension as native-compiled files.
2446 * Fasl file format version numbers have increased again, because
2447 a rearrangement of internal implementation packages made some
2448 dumped symbols in old fasl files unreadable in new cores.
2449 * DECLARE/DECLAIM/PROCLAIM logic is more nearly ANSI in general, with
2450 many fewer weird special cases.
2451 * Bug #17 (differing COMPILE-FILE behavior between logical and
2452 physical pathnames) has been fixed, and some related misbehavior too,
2453 thanks to a patch from Martin Atzmueller.
2454 * Bug #30 (reader problems) is gone, thanks to a CMU CL patch
2455 by Tim Moore, ported to SBCL by Martin Atzmueller.
2456 * Martin Atzmueller fixed several filesystem-related problems,
2457 including bug #36, in part by porting CMU CL patches, which were
2458 written in part by Paul Werkowski.
2459 * More compiler warnings in src/runtime/ are gone, thanks to
2460 more patches from Martin Atzmueller.
2461 * Martin Atzmueller pointed out that bug 37 was fixed by his patches
2464 changes in sbcl-0.6.9 relative to sbcl-0.6.8:
2466 * DESCRIBE now works on CONDITION objects.
2467 * The debugger now handles errors which arise when trying to print
2468 *DEBUG-CONDITION*, so that it's less likely to fall into infinite
2470 * The build system now uses an additional file, customize-target-features.lisp,
2471 to allow local modifications to the target *FEATURES* list. (The point of
2472 this is that now I can set up a custom configuration, e.g. with :SB-SHOW
2473 debugging features enabled, without having to worry about propagating it
2474 into everyone's system when I do a "cvs update".) When no
2475 customize-target-features.lisp file exists, the target *FEATURES* list
2476 should be constructed the same way as before.
2477 * fixed bugs in DEFCONSTANT ANSI-compatibility:
2478 ** DEFCONSTANT now tests reassignments using EQL, not EQUAL, in order to
2479 warn about behavior which is undefined under the ANSI spec. Note: This
2480 is specified by ANSI, but it's not very popular with programmers.
2481 If it causes you problems, take a look at the new SB-INT:DEFCONSTANT-EQX
2482 macro in the SBCL sources for an example of a workaround which you
2483 might use to make portable ANSI-standard code which does what you want.
2484 ** DEFCONSTANT's implementation is now based on EVAL-WHEN instead of on
2485 pre-ANSI IR1 translation magic, so it does the ANSI-specified thing
2486 when it's used as a non-toplevel form. (This is required in order
2487 to implement the DEFCONSTANT-EQX macro.)
2488 ** (DEFCONSTANT X 1) (DEFVAR X) (SETF X 2) no longer "works".
2489 ** Unfortunately, non-toplevel DEFCONSTANT forms can still do some
2490 funny things, due to bugs in the implementation of EVAL-WHEN
2491 (bug #IR1-3). This probably won't be fixed until 0.7.x. (Fortunately,
2492 non-toplevel DEFCONSTANTs are uncommon.)
2493 * The core file version number and fasl file version number have been
2494 incremented, because the old noncompliant DEFCONSTANT behavior involved
2495 calling functions which no longer exist, and because I also took the
2496 opportunity to chop an unsupported slot out of the DEBUG-SOURCE structure.
2497 * fixed bug 1 (error handling before read-eval-print loop starts), and
2498 redid debugger restarts and related debugger commands somewhat while
2500 ** The QUIT debugger command is gone, since it did something
2501 rather different than the SB-EXT:QUIT command, and since it never
2502 worked properly outside the main toplevel read/eval/print loop.
2503 Invoking the new TOPLEVEL restart provides the same functionality.
2504 ** The GO debugger command is also gone, since you can just invoke
2505 the CONTINUE restart directly instead.
2506 ** The TOP debugger command is also gone, since it's redundant with the
2507 FRAME 0 command, and since it interfered with abbreviations for the
2509 * The system now recovers better from non-PACKAGE values of the *PACKAGE*
2511 * The system now understands compound CONS types (e.g. (CONS FIXNUM T))
2512 as required by ANSI. (thanks to Douglas Crosher's CMU CL patches, with
2513 some porting work by Martin Atzmueller)
2514 * Martin Atzmueller reviewed the CMU CL mailing lists and came back
2515 with a boatload of patches which he ported to SBCL. Now that those
2517 ** The system tries to make sure that its low-priority messages
2518 are prefixed by semicolons, to help people who like to use
2519 syntax highlighting in their ILISP buffer. (This patch
2520 was originally due to Raymond Toy.)
2521 ** The system now optimizes INTEGER-LENGTH better, thanks to more
2522 patches originally written by Raymond Toy.
2523 ** The compiler understands coercion between single-value and
2524 multiple-VALUES type expressions better, getting rid of some very
2525 weird behavior, thanks to patches originally by Robert MacLachlan
2526 and Douglas Crosher.
2527 ** The system understands ANSI-style non-KEYWORD &KEY arguments in
2528 lambda lists, thanks to a patch originally by Pierre Mai.
2529 ** The system no longer bogusly warns about "abbreviated type
2531 ** The compiler gets less confused by inlining and RETURN-FROM,
2532 thanks to some patches originally by Tim Moore.
2533 ** The system no longer hangs when dumping circular lists to fasl
2534 files, thanks to a patch originally from Douglas Crosher.
2535 * Martin Atzmueller also fixed ROOM, so that it no longer fails with an
2536 undefined function error.
2537 * gave up on fixing bug 3 (forbidden-by-ANSI warning for type mismatch
2538 in structure slot initforms) for now, documented workaround instead:-|
2539 * fixed bug 4 (no WARNING for DECLAIM FTYPE of slot accessor function)
2540 * fixed bug 5: added stubs for various Gray stream functions called
2541 in the not-a-CL:STREAM case, so that even when Gray streams aren't
2542 installed, at least appropriate type errors are generated
2543 * fixed bug 8: better reporting of various PROGRAM-ERRORs
2544 * fixed bug 9: IGNORE and IGNORABLE now work reasonably and more
2545 consistently in DEFMETHOD forms.
2546 * removed bug 21 from BUGS, since Martin Atzmueller points out that
2547 it doesn't seem to affect SBCL after all
2548 * The C runtime system now builds with better optimization and many
2549 fewer warnings, thanks to lots of cleanups by Martin Atzmueller.
2551 changes in sbcl-0.6.8 relative to sbcl-0.6.7:
2553 * The system is now under CVS at SourceForge (instead of the
2554 CVS repository on my home machine).
2555 * The new signal handling code has been tweaked to treat register
2556 contents as (UNSIGNED-BYTE 32), as the old CMU CL code did,
2557 instead of (SIGNED-BYTE 32), as the C header files have it. (Code
2558 downstream, e.g. in debug-int.lisp, has implicit dependencies
2559 on the unsignedness of integer representation of machine words,
2560 and that caused the system to bomb out with infinite regress
2561 when trying to recover from type errors involving signed values,
2562 e.g. (BUTLAST '(1 2 3) -1).)
2563 * (BUTLAST NIL) and (NBUTLAST NIL) now return NIL as they should.
2564 (This was one of the bugs Peter Van Eynde reported back in July.)
2565 * The system now uses code inspired by Colin Walters' O(N)
2566 implementation of MAP (from the cmucl-imp@cons.org mailing
2567 list, 2 September 2000) when it can't use a DEFTRANSFORM to
2568 inline the MAP operation, and there is more than one
2569 sequence argument to the MAP call (so that it can't just
2570 do ETYPECASE once and for all based on the type of the
2571 single sequence argument). (The old non-inline implementation
2572 of the general M-argument sequence-of-length-N case required
2573 O(M*N*N) time when any of the sequence arguments were LISTs.)
2574 * The QUIT :UNIX-CODE keyword argument has been renamed to
2575 QUIT :UNIX-STATUS. (The old name still works, but is deprecated.)
2576 * Raymond Wiker's patches to port RUN-PROGRAM from CMU CL to SBCL
2578 * Raymond Wiker's patches to port dynamic loading from Linux to
2579 FreeBSD have been added.
2580 * The BUGS file is now more nearly up to date, thanks in large part
2581 to Martin Atzmueller's review of it.
2582 * The debugger now flushes standard output streams before it begins
2583 its output ("debugger invoked" and so forth).
2584 * The core version number and fasl file version number have both
2585 been incremented, because of incompatible changes in the layout
2587 * FINISH-OUTPUT is now called more consistently on QUIT. (It
2588 used to not be called for a saved Lisp image.)
2589 * Martin Atzmueller's version of a patch to fix a compiler crash,
2590 as posted on sbcl-devel 13 September 2000, has been installed.
2591 * Instead of installing Martin Atzmueller's patch for the
2592 compiler transform for SUBSEQ, I deleted the compiler transform,
2593 and transforms for some similar consing operations.
2594 * A bug in signal handling which kept TRACE from working on OpenBSD
2596 * added enough DEFTRANSFORMs to allow (SXHASH 'FOO) to be optimized
2597 away by constant folding
2598 * The system now defines its address space constants in one place
2599 (in the Lisp sources), and propagates them automatically elsewhere
2600 (through GENESIS and the sbcl.h file). Therefore, patching the
2601 address map is less unnecessarily tedious and error-prone. The
2602 Lisp names of address space constants have also been systematized.
2603 * CVS tags like dollar-Header-dollar have been removed from
2604 the sources, because they have never saved me trouble and
2605 they've been source of trouble working with patches and other
2606 diff-related operations.
2607 * fixed the PROG1-vs.-PROGN bug in HANDLER-BIND (reported by
2608 ole.rohne@cern.ch on cmucl-help@cons.org 2000-10-25)
2610 changes in sbcl-0.6.7 relative to sbcl-0.6.6:
2612 * The system has been ported to OpenBSD.
2613 * The system now compiles with a simple "sh make.sh" on the systems
2614 that it's supported on. I.e., now you no longer need to tweak
2615 text in the target-features.lisp-expr and symlinks in src/runtime/
2616 by hand, the make.sh takes care of it for you.
2617 * The system is no longer so grossly inefficient when compiling code
2618 involving vectors implemented as general (not simple) vectors (VECTOR T),
2619 so code which dares to use VECTOR-PUSH-EXTEND and FILL-POINTER, or
2620 which dares to use the various sequence functions on non-simple
2621 vectors, takes less of a performance hit.
2622 * There is now a primitive type predicate VECTOR-T-P
2623 to test for the (VECTOR T) type, so that e.g.
2624 (DEFUN FOO (V) (DECLARE (TYPE (VECTOR T) V)) (AREF V 3))
2625 can now be compiled with some semblance of efficiency. (The old code
2626 turned the type declaration into a full call to %TYPEP at runtime!)
2627 * AREF on (VECTOR T) is still not fast, since it's still compiled
2628 as a full call to SB-KERNEL:DATA-VECTOR-REF, but at least the
2629 ETYPECASE used in DATA-VECTOR-REF is now compiled reasonably
2630 efficiently. (The old version made full calls to SUBTYPEP at runtime!)
2631 * (MAKE-ARRAY 12 :FILL-POINTER T) is now executed less inefficiently,
2632 without making full calls to SUBTYPEP at runtime.
2633 (Some analogous efficiency issues for non-simple vectors specialized to
2634 element types other than T, or for non-simple multidimensional arrays,
2635 have not been addressed. They could almost certainly be handled the
2636 same way if anyone is motivated to do so.)
2637 * The changes in array handling break binary compatibility, so
2638 *BACKEND-FASL-FILE-VERSION* has been bumped to 4.
2639 * (TYPEP (MAKE-ARRAY 12 :FILL-POINTER 4) 'VECTOR) now returns (VALUES T)
2640 instead of (VALUES T T).
2641 * By following the instructions that Dan Barlow posted to sbcl-devel
2642 on 2 July 2000, I was able to enable primitive dynamic object
2643 file loading code for Linux. The full-blown CMU CL LOAD-FOREIGN
2644 functionality is not implemented (since it calls ld to resolve
2645 library references automatically, requiring RUN-PROGRAM for its
2646 implementation), but a simpler SB-EXT:LOAD-1-FOREIGN (which doesn't
2647 try to resolve library references) is now supported.
2648 * The system now flushes the standard output streams when it terminates,
2649 unless QUIT is used with the RECKLESSLY-P option set. It also flushes
2650 them at several other probably-convenient times, e.g. in each pass of
2651 the toplevel read-eval-print loop, and after evaluating a form given
2652 as an "--eval" command-line option. (These changes were motivated by a
2653 discussion of stream flushing issues on cmucl-imp in August 2000.)
2654 * The source transform for TYPEP of array types no longer assumes
2655 that an array whose element type is a not-yet-defined type
2656 is implemented as an array of T, but instead punts, so that the
2657 type will be interpreted at runtime.
2658 * There is now some support for cross-compiling in make.sh: each of
2659 the phases of make.sh has its own script. (This should be transparent
2660 to people doing ordinary, non-cross-compile builds.)
2661 * Since my laptop doesn't have hundreds of megabytes of memory like
2662 my desktop machine, I became more motivated to do some items on
2663 my to-do list in order to reduce the size of the system a little:
2664 ** Arrange for various needed-only-at-cold-init things to be
2665 uninterned after cold init. To support this, those things have
2666 been renamed from FOO and *FOO* to !FOO and *!FOO* (i.e., all
2667 symbols with such names are now uninterned after cold init).
2668 ** Bind SB!C::*TOP-LEVEL-LAMBDA-MAX* to a nonzero value when building
2669 fasl files for cold load.
2670 ** Remove the old compiler structure pooling code (which used to
2671 be conditional on the target feature :SB-ALLOC) completely.
2672 ** Redo the representation of some data in cold init to be more compact.
2673 (I also looked into supporting byte compiled code at bootstrap time,
2674 which would probably reduce the size of the system a lot, but that
2675 looked too complicated, so I punted for now.)
2676 * The maximum signal nesting depth in the src/runtime/ support code has
2677 been reduced from 4096 to 256. (I don't know any reason for the very
2678 large old value. If the new smaller value turns out to break something,
2679 I'll probably just bump it back up.)
2680 * PPRINT-LOGICAL-BLOCK is now pickier about the types of its arguments,
2682 * Many, many bugs reported by Peter Van Eynde have been added to
2683 the BUGS list; some have even been fixed.
2684 * While enabling dynamic object file loading, I tried to make the
2685 code easier to understand, renaming various functions and variables
2686 with less ambiguous names, and changing some function calling
2687 conventions to be Lispier (e.g. returning NIL instead of 0 for failure).
2688 * While trying to figure out how to do the OpenBSD port, I tried to
2689 clean up some of the code in src/runtime/. In particular, I dropped
2690 support for non-POSIX signal handling, added various comments,
2691 tweaked the code to reduce the number of compilation warnings, and
2692 renamed some files to increase consistency.
2693 * To support the new automatic configuration functionality in make.sh,
2694 the source file target-features.lisp-expr has been replaced with the
2695 source file base-target-features.lisp-expr and the machine-generated
2696 file local-target-features.lisp-expr.
2697 * fixed a stupid quoting error in make.sh so that using CMU CL
2698 "lisp -batch" as cross-compilation host works again
2700 changes in sbcl-0.6.6 relative to sbcl-0.6.5:
2702 * DESCRIBE no longer tries to call itself recursively to describe
2703 bound/fbound values, so that it no longer fails on symbols which are
2704 bound to themselves (like keywords, T, and NIL).
2705 * DESCRIBE now works on generic functions.
2706 * The printer now prints less-screwed-up representations of closures
2707 (not naively trying to bogusly use the %FUNCTION-NAME accessor on them).
2708 * A private symbol is used instead of the :EMPTY keyword previously
2709 used to mark empty slots in hash tables. Thus
2710 (DEFVAR *HT* (MAKE-HASH-TABLE))
2711 (SETF (GETHASH :EMPTY *HT*) :EMPTY)
2712 (MAPHASH (LAMBDA (K V) (FORMAT T "~&~S ~S~%" K V)))
2713 now does what ANSI says that it should. (You can still get
2714 similar noncompliant behavior if bang on the hash table
2715 implementation with all the symbols you get back from
2716 DO-ALL-SYMBOLS, but at least that's a little harder to do.)
2717 This breaks binary compatibility, since tests for equality to
2718 :EMPTY are wired into things like the macroexpansion of
2719 WITH-HASH-TABLE-ITERATOR in FASL files produced by earlier
2721 * There's now a minimal placeholder implementation for CL:STEP,
2722 as required by ANSI.
2723 * An obscure bug in the interaction of the normal compiler, the byte
2724 compiler, inlining, and structure predicates has been patched
2725 by setting the flags for the DEFTRANSFORM of %INSTANCE-TYPEP as
2726 :WHEN :BOTH (as per Raymond Toy's suggestion on the cmucl-imp@cons.org
2728 * Missing ordinary arguments in a macro call are now detected even
2729 when the macro lambda list contains &KEY or &REST.
2730 * The debugger no longer complains about encountering the top of the
2731 stack when you type "FRAME 0" to explicitly instruct it to go to
2732 the top of the stack. And it now prints the frame you request even
2733 if it's the current frame (instead of saying "You are here.").
2734 * As specified by ANSI, the system now always prints keywords
2735 as #\: followed by SYMBOL-NAME, even when *PACKAGE* is the
2737 * The default initial SIZE of HASH-TABLEs is now smaller.
2738 * Type information from CLOS class dispatch is now propagated
2739 into DEFMETHOD bodies, so that e.g.
2740 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2742 is now basically equivalent to
2743 (DEFMETHOD FOO ((X SINGLE-FLOAT))
2744 (DECLARE (TYPE SINGLE-FLOAT X))
2746 and the compiler can compile (+ X 123.0) as a SINGLE-FLOAT-only
2747 operation, without having to do run-time type dispatch.
2748 * The macroexpansion of DEFMETHOD has been tweaked so that it has
2749 reasonable behavior when arguments are declared IGNORE or IGNORABLE.
2750 * Since I don't seem to be making big file reorganizations very often
2751 any more (and since my archive of sbcl-x.y.zv.tar.bz2 snapshots
2752 is overflowing my ability to conveniently back them up), I've finally
2753 checked the system into CVS. (The CVS repository is on my home system,
2754 not at SourceForge -- putting it on SourceForge might come later.)
2755 * SB-EXT:*GC-NOTIFY-STREAM* has been added, to control where the
2756 high-level GC-NOTIFY-FOO functions send their output. (There's
2757 still very little control of where low-level verbose GC functions
2758 send their output.) The SB-EXT:*GC-VERBOSE* variable now controls
2759 less than it used to -- the GC-NOTIFY-FOO functions are now under
2760 the control of *GC-NOTIFY-STREAM*, not *GC-VERBOSE*.
2761 * The system now stores the version string (LISP-IMPLEMENTATION-VERSION)
2762 in only one place in the source code, and propagates it automatically
2763 everywhere that it's needed. Thus e.g. when I bump the version from
2764 0.6.6 to 0.6.7, I'll only need to modify the sources in one place.
2765 * The C source files now include boilerplate legalese and documentation
2766 at the head of each file (just as the Lisp source files already did).
2767 * At Dan Barlow's suggestion, the hyperlink from the SBCL website
2768 to his page will be replaced with a link to his new CLiki service.
2770 changes in sbcl-0.6.5 relative to sbcl-0.6.4:
2772 * Raymond Wiker's patches to port the system to FreeBSD have been merged.
2773 * The build process now looks for GNU make under the default name "gmake",
2774 instead of "make" as it used to. If GNU make is not available as "gmake"
2775 on your system, you can change this default behavior by setting the
2776 GNUMAKE environment variable.
2777 * Replace #+SB-DOC with #!+SB-DOC in seq.lisp so that the system
2778 can build without error under CMU CL.
2780 changes in sbcl-0.6.4 relative to sbcl-0.6.3:
2782 * There is now a partial SBCL user manual (with some new text and some
2783 text cribbed from the CMU CL manual).
2784 * The beginnings of a profiler have been added (starting with the
2785 CMU CL profiler and simplifying and cleaning up). Eventually the
2786 main interface should be through the TRACE macro, but for now,
2787 it's still accessed through vaguely CMU-CL-style functions and macros
2788 exported from the package SB-PROFILE.
2789 * Some problems left over from porting CMU CL to the new
2790 cross-compilation bootstrap process have been cleaned up:
2791 ** DISASSEMBLE now works. (There was a problem in using DEFMACRO
2792 instead of SB!XC:DEFMACRO, compounded by an oversight on my
2793 part when getting rid of the compiler *BACKEND* stuff.)
2794 ** The value of *NULL-TYPE* was screwed up, because it was
2795 being initialized before the type system knew the final
2796 definition of the 'NULL type. This screwed up several key
2797 optimizations in the compiler, causing inefficiency in all sorts
2798 of places. (I found it because I wanted to understand why
2799 GET-INTERNAL-RUN-TIME was consing.)
2800 * fixed a bug in DEFGENERIC which was causing it to overwrite preexisting
2801 PROCLAIM FTYPE information. Unfortunately this broke binary
2802 compatibility again, since now the forms output by DEFGENERIC
2803 to refer to functions which didn't exist in 0.6.3.
2804 * added declarations so that SB-PCL::USE-CACHING-DFUN-P
2805 can use the new (as of 0.6.3) transform for SOME into MAP into
2807 * changed (MOD 1000000) type declarations for Linux timeval.tv_usec slot
2808 values to (INTEGER 0 1000000), so that the time code will no longer
2809 occasionally get blown up by Linux returning 1000000 microseconds
2810 * PRINT-UNREADABLE-OBJECT has been tweaked to make the spacing of
2811 its output conform to the ANSI spec. (Alas, this makes its output
2812 uglier in the :TYPE T :IDENTITY NIL case, but them's the breaks.)
2813 * A full call to MAP NIL with a single sequence argument no longer conses.
2814 * fixes to problems pointed out by Martin Atzmueller:
2815 * The manual page no longer talks about multiprocessing as though
2816 it were currently supported.
2817 * The ILISP support patches have been removed from the distribution,
2818 because as of version 5.10.1, ILISP now supports SBCL without us
2819 having to maintain patches.
2820 * added a modified version of Raymond Toy's recent CMU CL patch for
2821 EQUALP comparison of HASH-TABLE
2823 changes in sbcl-0.6.3 relative to sbcl-0.6.2:
2825 * The system still can't cross-compile itself with
2826 *TYPE-SYSTEM-INITIALIZED* (and all the consistency checks that
2827 entails), but at least it can compile more of itself that way
2828 than it used to be able to, and various buglets which were uncovered
2829 by trying to cross-compile itself that way have now been fixed.
2830 * This release breaks binary compatibility again. This time
2831 at least I've incremented the FASL file format version to 2, so that the
2832 problem can be detected reliably instead of just causing weird errors.
2833 * various new style warnings:
2834 ** using DEFUN, DEFMETHOD, or DEFGENERIC to overwrite an old definition
2835 ** using the deprecated EVAL/LOAD/COMPILE situation names in EVAL-WHEN
2836 ** using the lexical binding of a variable named in the *FOO* style
2837 * DESCRIBE has been substantially rewritten. It now calls DESCRIBE-OBJECT
2838 as specified by ANSI.
2839 * *RANDOM-STATE* is no longer automatically initialized from
2840 (GET-UNIVERSAL-TIME), but instead from a constant seed. Thus, the
2841 default behavior of the system is to repeat its behavior every time
2842 it's run. If you'd like to change this behavior, you can always
2843 explicitly set the seed from (GET-UNIVERSAL-TIME); whereas under the
2844 old convention there was no comparably easy way to get the system to
2845 repeat its behavior every time it was run.
2846 * Support for the pre-CLTL2 interpretation of FUNCTION declarations as
2847 FTYPE declarations has been removed, in favor of their ANSI
2848 interpretation as TYPE FUNCTION declarations. (See p. 228 of CLTL2.)
2849 * The quantifiers SOME, EVERY, NOTANY, and NOTEVERY no longer cons when
2850 the types of their sequence arguments can be determined at compile time.
2851 This is done through a new open code expansion for MAP which eliminates
2852 consing for (MAP NIL ..), and reduces consing otherwise, when sequence
2853 argument types can be determined at compile time.
2854 * The optimizer now transforms COERCE into an identity operation when it
2855 can prove that the coerced object is already of the correct type. (This
2856 can be a win for machine generated code, including the output of other
2857 optimization transforms, such as the MAP transform above.)
2858 * Credit information has been moved from source file headers into CREDITS.
2859 * Source file headers have been made more standard.
2860 * The CASE macro now compiles without complaining even when it has
2863 changes in sbcl-0.6.2 relative to sbcl-0.6.1:
2865 * (Note that the way that the PCL macroexpansions were rewritten
2866 to accommodate the change in DEFGENERIC below breaks binary
2867 compatibility. That is, fasl files compiled under sbcl-0.6.1 may
2868 not run under sbcl-0.6.2. Once we get out of alpha releases,
2869 i.e. hit release 1.0.0, we'll probably try to maintain binary
2870 compatibility between maintenance releases, e.g. between sbcl-1.4.3
2871 and sbcl-1.4.4. Until then, however, it might be fairly common
2872 for maintenance releases to break binary compatibility.)
2873 * A bug in the calculation of WARNINGS-P and FAILURE-P in COMPILE-FILE
2875 * The reporting of unhandled signals has been changed to print some
2876 explanatory text as well as the report form. (Previously only
2877 the report form was printed.)
2878 * The macroexpansion for DEFGENERIC now DECLAIMs the function that
2879 it defines, so that the compiler no longer issues undefined function
2880 warnings for compiled-but-not-yet-loaded generic functions.
2881 * The CLTL-style "LISP" and "USER" nicknames for the "COMMON-LISP"
2882 and "COMMON-LISP-USER" packages have been removed. Now only the "CL"
2883 and "CL-USER" standard nicknames from the "11.1.2 Standardized Packages"
2884 section of the ANSI spec are supported.
2885 * The "" nickname for the "KEYWORD" package has been removed.
2886 The reader still handles symbol tokens which begin with a package marker
2887 as keywords, but it doesn't expose its mechanism for doing so in the
2888 (PACKAGE-NICKNAMES (FIND-PACKAGE "KEYWORD")) list.
2889 * The system now issues STYLE-WARNINGs for contradictory TYPE
2890 proclamations. (Warnings for contradictory FTYPE proclamations would
2891 be nice too, but those can't be done usefully unless the type system
2892 is made smarter about FUNCTION types.)
2893 * The names of source files "*host-*.lisp" and "*target-*.lisp" have been
2894 systematized, so that "*target-*.lisp is supposed to exist only on the
2895 target and imply that there's a related file which exists on the
2896 host, and *host-*.lisp is supposed to exist only on the host and imply
2897 that there's a related file which exists on the target. This involves a
2898 lot of renaming. Hopefully the acute confusion caused by the renaming
2899 will be justified by the reduction in chronic confusion..
2900 ** runtime-type.lisp -> early-target-type.lisp
2901 ** target-type.lisp -> late-target-type.lisp
2902 ** early-host-format.lisp -> early-format.lisp
2903 ** late-host-format.lisp -> late-format.lisp
2904 ** host-error.lisp -> misc-error.lisp
2905 ** early-error.lisp -> early-target-error.lisp
2906 ** late-error.lisp -> late-target-error.lisp
2907 ** host-defboot.lisp -> early-defboot.lisp
2908 ** code/misc.lisp -> code/target-misc.lisp
2909 ** code/host-misc.lisp -> code/misc.lisp
2910 ** code/numbers.lisp -> code/target-numbers.lisp
2911 ** code/early-numbers.lisp -> numbers.lisp
2912 ** early-host-type.lisp -> early-type.lisp
2913 ** late-host-type.lisp -> late-type.lisp
2914 ** host-typep.lisp -> typep.lisp
2915 ** load.lisp -> target-load.lisp
2916 ** host-load.lisp -> load.lisp
2917 ** host-disassem.lisp -> disassem.lisp
2918 ** host-insts.lisp -> insts.lisp
2919 ** byte-comp.lisp -> target-byte-comp.lisp
2920 ** host-byte-comp.lisp -> byte-comp.lisp
2921 ** host-signal.lisp -> signal.lisp
2922 ** host-defstruct.lisp -> defstruct.lisp
2923 ** late-target-type.lisp -> deftypes-for-target.lisp
2924 Furthermore, several other previously target-only files foo.lisp (e.g.
2925 hash-table.lisp and random.lisp) have been split into a target-and-host
2926 foo.lisp file and a target-only target-foo.lisp file, with their key type
2927 definitions in the target-and-host part, so that the cross-compiler will
2928 know more about target types.
2929 * DEFSTRUCT BACKEND, and the BACKEND-valued *BACKEND* variable, have
2930 gone away. In their place are various *BACKEND-FOO* variables
2931 corresponding to the slots of the old structure.
2932 * A bug which caused the SB-COLD bootstrap-time package to be propagated
2933 into the target SBCL has been fixed.
2934 * The chill.lisp system for loading cold code into a running SBCL
2936 * Support for the CMU CL "scavenger hook" extension has been removed.
2937 (It was undocumented and unused in the CMU CL sources that SBCL was
2938 derived from, and stale in sbcl-0.6.1.)
2939 * Various errors in the cross-compiler type system were detected
2940 by running the cross-compiler with *TYPE-SYSTEM-INITIALIZED*
2941 (enabling various consistency checks). Many of them were fixed,
2942 but some hard problems remain, so the compiler is back to
2943 running without *TYPE-SYSTEM-INITIALIZED* for now.
2944 * As part of the cross-compiler type system cleanup, I implemented
2945 DEF!TYPE and got rid of early-ugly-duplicates.lisp.
2946 * I have started adding UNCROSS calls throughout the type system
2947 and the INFO database. (Thus perhaps eventually the blanket UNCROSS
2948 on cross-compiler input files will be able to go away, and various
2950 * CONSTANTP now returns true for quoted forms (as explicitly required
2953 changes in sbcl-0.6.1 relative to sbcl-0.6.0:
2955 * changed build optimization from (SAFETY 1) to (SAFETY 3) as a short-term
2956 fix for various type-unsafety bugs, e.g. failures with (LENGTH 123) and
2957 (MAKE-LIST -1). In the longer term, it ought to become true
2958 that declarations are assertions even at SAFETY 1. For now, it's not
2959 quite true even at SAFETY 3, but it's at least more nearly true..
2960 (Note that this change seems to increases the size of the system by
2961 O(5%) and to decrease the speed of the compiler by 20% or more.)
2962 * changed ALIEN printing to be much more abbreviated, as a short-term fix
2963 for the problem of printing dozens of lines of distracting information
2964 about low-level system machinery as part of the top stack frame
2965 on entry to the debugger when an undefined function was called.
2966 * tweaked the debugger's use of WITH-STANDARD-IO-SYNTAX so that *PACKAGE*
2967 is not reset to COMMON-LISP-USER.
2968 * Compilation of stuff related to dyncount.lisp has been made conditional
2969 on the :SB-DYNCOUNT target feature, so that the ordinary core system is
2970 smaller. The various dyncount-related symbols have been moved into
2971 a new "SB-DYNCOUNT" package.
2972 * tty-inspect.lisp has been renamed to inspect.lisp.
2973 * unix-glibc2.lisp has been renamed to unix.lisp, and the :GLIBC2
2974 feature has gone away. (When we eventually port to other flavors of
2975 libc and/or Unix, we'll try to make the differences between flavors
2976 invisible at the user level.)
2977 * Various other *FEATURES* tags, and/or their associated conditionals,
2978 have been removed if obsolescent, or given better documentation, or
2979 sometimes given more-mnemonic names.
2981 changes in sbcl-0.6.0 relative to sbcl-0.5.0:
2983 * tidied up "make.sh" script
2984 * tidied up system directory structure
2985 * better "clean.sh" behavior
2986 * added doc/FOR-CMUCL-DEVELOPERS
2987 * many many small tweaks to output format, e.g. removing possibly-confusing
2988 trailing #\. character in DESCRIBE-INSTANCE
2989 * (EQUALP #\A 'A) no longer signals an error.
2990 * new hashing code, including EQUALP hashing
2991 * tidied up Lisp initialization and toplevel
2992 * initialization files (e.g. /etc/sbclrc and $HOME/.sbclrc)
2993 * command line argument processing
2994 * added POSIX-GETENV function to deal with Unix-ish environment variables
2995 * more-Unixy handling of *STANDARD-INPUT* and other Lisp streams, e.g.
2996 terminating SBCL on EOF
2997 * non-verbose GC by default
2998 * There is no more "sbcl" shell script; the sbcl file is now the C
2999 runtime executable (just like CMU CL).
3000 * removed some unused fops, e.g. FOP-UNIFORM-VECTOR, FOP-CHARACTER, and
3002 * tweaked debug-info.lisp and debug-int.lisp to make the debugger store
3003 symbol and package information as Lisp native symbol and package objects
3004 instead of strings naming symbols and strings naming packages. This way,
3005 whenever packages are renamed (as in warm init), debug information is
3006 transformed along with everything else.
3007 * tweaked the optimization policy declarations which control the building
3008 of SBCL itself. Now, among other things, the system no longer saves
3009 source location debugging information. (This helps two problems at once
3010 by reducing SBCL size and by keeping SBCL from trying to look for its
3011 sources -- which may not exist -- when reporting errors.)
3012 * added src/cold/chill.lisp, to let SBCL read its own cold sources for
3013 debugging and testing purposes
3014 * cleaned up printing, making the printer call PRINT-OBJECT for
3015 instances, and using PRINT-UNREADABLE-OBJECT for most PRINT-OBJECT
3016 methods, giving nearly-ANSI behavior
3017 * converted almost all special variables to use *FOO* naming convention
3018 * deleted PARSE-TIME functionality, since it can be done portably
3019 * moved some files out of cold init into warm init
3020 * deleted DEFUN UNDEFINED-VALUE, replaced (UNDEFINED-VALUE) forms
3022 * regularized formatting of source files
3023 * added an install.sh script
3024 * fixed ridiculous memory usage of cross-compiler by making
3025 compiler/alloc.lisp not try to do pooling unless it can hook
3026 itself into the GC of the cross-compilation host. Now the system
3027 builds nicely on my old laptop.
3028 * added :SB-ALLOC in target-features.lisp-expr
3029 * deleted mention of :ANSI-DOC from target-features.lisp-expr (since it
3030 was not implemented)
3031 * re-did condition handling and note reporting in the compiler. Notes
3032 are no longer handled by signalling conditions. Style warnings
3033 and warnings are handled more correctly and reported in such a way
3034 that it's easy to find one or the other in your output (so that you
3035 can e.g. figure out which of many problems caused COMPILE-FILE to
3037 * changed the severity of several compiler warnings from full WARNING
3038 to STYLE-WARNING in order to conform with the ANSI spec; also changed
3039 compiler note reporting so that it doesn't use the condition system
3040 at all (and hence affects neither FAILURE-P nor WARNINGS-P in the
3041 COMPILE-FILE command)
3042 * made PROCLAIM and DECLAIM conform to ANSI. PROCLAIM is now an ordinary
3043 function. As a consequence, START-BLOCK and END-BLOCK declarations are
3044 no longer supported, since their implementation was deeply intertwingled
3045 with the magical, non-ANSI treatment that PROCLAIM received in CMU CL.
3046 * removed bogus "support" for compiler macros named (SETF FOO), and
3047 removed the compiler macro for SETF INFO (but only after making a fool
3048 of myself on the cmucl-imp mailing list by posting a bogus patch for
3049 DEFINE-COMPILER-MACRO..)
3050 * Compiled files containing forms which have side effects on the Lisp
3051 reader (such as DEFPACKAGE forms) are now handled more correctly.
3052 (Compiler queuing of top level lambdas has been suppressed by setting
3053 *TOP-LEVEL-LAMBDA-MAX* to 0. )
3054 * deleted various currently-unused source files, e.g. gengc.lisp. They
3055 may be added back at some point e.g. when porting to other architectures,
3056 but until they are it's distracting to distribute them and to try to
3058 * deleted "UNCROSS couldn't recurse through.." style warnings, since
3059 there were so many of them they're just distractions, and UNCROSS is
3060 known to be able to handle the current sources
3061 * moved PROFILE functionality into TRACE, so that it will be clear
3062 how the wrapping and unwrapping of functions when you profile them
3063 interacts with the wrapping and unwrapping of functions when you
3064 trace them. (Actually, the functionality isn't there yet, but at least
3065 the interface specification is there. Hopefully, the functionality will
3066 arrive with some future maintenance release.)
3067 * removed host-oops.lisp
3068 * changed signature of QUIT function to allow UNIX-CODE argument
3069 * fixed READ-SEQUENCE bug
3070 * tweaked verbose GC output so that it looks more like the progress
3071 output that ANSI specifies for functions like LOAD
3072 * set up the system on sourceforge.com, with home pages, mailing lists, etc.
3073 * added <http://sbcl.sourceforge.com> to the banner information printed by
projects / sbcl.git / blob